http://hdl.handle.net/1811/5962 Fri, 24 May 2013 18:21:17 GMT 2013-05-24T18:21:17Z http://kb.osu.edu:80/dspace/bitstream/id/12094/byrd.JPG http://hdl.handle.net/1811/5962 http://hdl.handle.net/1811/54835 Scientific Opportunities for a Long-Range Aircraft for Research in Antarctica LARA A workshop sponsored by the National Science Foundation's Office of Polar Programs was held in Virginia in September 2004 to explore scientific opportunities for multidisciplinary research aircraft used in Antarctic research. This LARA (Long-range Aircraft for Research in Antarctica) workshop was attended by more than 60 research scientists representing a diverse community. The workshop had 3 goals: (1) name the important scientific questions where gaps exist in our current knowledge; (2) justify the need for new scientific research tools; and (3) recommend to NSF the necessary requirements for a long-range research aviation facility. Fri, 01 Jul 2005 00:00:00 GMT http://hdl.handle.net/1811/54835 2005-07-01T00:00:00Z http://hdl.handle.net/1811/54606 CRRELEX 94: Surface Roughness and Physical Properties Measuremments from Two Experiments Zabel, Ingrid H.H.; Jezek, Kenneth C. This note summarizes physical properties measurements made by an Ohio State group on two ice sheets grown at CRREL during January and March 1994. The measurements were made in conjunction with radar measurements made by an Ohio State/University of Kansas team. The physical property focused on was ice surface roughness, although other properties were measured as well. This note is divided in sections as follows. In section 2 we describe the roughness measurements from the first ice sheet. In section 3 we discuss additional physical properties we measured on this ice sheet. Sections 4 and 5 contain information about roughness measurements and other physical properties measurements, respectively, on the second ice sheet. Thu, 21 Jul 1994 00:00:00 GMT http://hdl.handle.net/1811/54606 1994-07-21T00:00:00Z Zabel, Ingrid H.H. Jezek, Kenneth C. http://hdl.handle.net/1811/54597 Radar and Snow Structure Studies in the Percolation Zone of the Greenland Ice Sheet: A Data Report on the 1993 Field Season at Dye-2 Zabel, Ingrid H.H.; Baggeroer, Paul A.; Jezek, Kenneth C. From June 18 to July 12, 1993, a Byrd Polar Research Center team undertook radar and snow physical properties studies near Dye-2, in the percolation zone of Greenland's ice sheet. These studies were intended to advance our understanding of the microwave scattering properties of the ice sheet, in order to better interpret satellite remote sensing signals for mass balance and climate studies. This report summarizes the experiments performed and the data collected. Table I summarizes a list of our measurement objectives. In general terms, our work at Dye-2 consisted of making radar observations of the snow at Ku-band (13.5 GHz) and a variety of incidence angles. The radar frequency is the same as that of the radar altimeter aboard the ERS-1 satellite. In conjunction with the radar observations, we dug pits in the snow and recorded physical properties such as snow stratigraphy, density, and grain sizes. In section 2 we present a map of the camp and experiment sites. In sections 3 and 4 we describe the pit and radar studies in detail. Finally, section 5 is a detailed chronology of the field season. Sat, 01 Jan 1994 00:00:00 GMT http://hdl.handle.net/1811/54597 1994-01-01T00:00:00Z Zabel, Ingrid H.H. Baggeroer, Paul A. Jezek, Kenneth C. http://hdl.handle.net/1811/54589 Derived Backscatter Values from JERS-1 Digital Number Distributions Over Ross Island, Antarctica (McMurdo Station). Noltimier, Katy F.; Sohn, Hong-Gyoo; Jezek, Kenneth C. This report examines the derived backscatter values for different physical properties from one JERS-1 image over Hut Point Peninsula on Ross Island in the McMurdo Station area. The results discussed in this report will be used to determine a suitable location for transponder testing for the Radarsat Antarctic Mapping Project. Histograms of digital number (DN) values (0-255) were created to determine the DN distribution and approximate backscatter value for five locations on a single JERS-1 image. Two locations were chosen over first year sea ice, and one location each over glacial ice, exposed rock, and the McMurdo Station. From published backscatter values for first year ice of -15dB and a DN of 40, estimated from histograms, an approximation of the calibration constant K was calculated and subsequent backscatter coefficients were computed for the remaining locations. Digital numbers peaked at 255 for both glacial ice and McMurdo Station indicating that an area outside of McMurdo Station would be preferable for transponder testing. Mon, 01 Jan 1996 00:00:00 GMT http://hdl.handle.net/1811/54589 1996-01-01T00:00:00Z Noltimier, Katy F. Sohn, Hong-Gyoo Jezek, Kenneth C. http://hdl.handle.net/1811/54570 CRRELEX 93: Surface Roughness and Physical Properties Measurements Zabel, Ingrid H.H.; Jezek, Kenneth C. In this report we describe the measurements we made on saline ice at CRREL during January 1993, and we discuss some preliminary results and interpretations. In addition, we discuss directions to take regarding analysis of this year's CRREL data, and ideas for future work. We obtained extensive surface roughness and physical properties data using a variety of instruments and techniques, particularly for the ice grown indoors in the pit. We took care to take measurements in conjunction with the radar measurements taken by the University of Kansas group in the pit, so that the radar and physical properties data could be meaningfully combined. Outdoors, we also tried to take data in regions of the pond and at times that coincided with the passive and active microwave measurements being made by various groups. This report is divided as follows: we describe our surface roughness measurements for both the pit and the pond in Section 2, and salinity and structure measurements in Section 3. In Section 4 we discuss our findings , and in Section 5 we discuss future work. Fri, 01 Jan 1993 00:00:00 GMT http://hdl.handle.net/1811/54570 1993-01-01T00:00:00Z Zabel, Ingrid H.H. Jezek, Kenneth C. http://hdl.handle.net/1811/54569 ERS-1 SAR Data Extraction Methodologies, and Procedures Adkins, J. This paper discusses the procedures used to derive the products available from the ERS-1 SAR Precision Images (Herein called SAR images.) The products that are available are: raw image, 8x8 averaged image, tiling, simple tiling of percolation threshold classification, swath of dB values of across swath along row or column of images, filtered data of swaths. Each of these products have a distinct procedure for producing the result, and have a section of this paper dedicated to expressing it. The purpose of the products can be expressed by the following: To understand seasonal and longer time variations in the dynamics & physical properties of polar ice on hemispheric scales. Remote sensing provides the tools for reaching that goal. A preliminary plan to meet this goal is 1) To visualize the data received, 2) Classify the different regimes, 3) Overlay different instruments data sets for comparison and enhancement, 4) Produce a model to use against other SAR data, and 5) To create an animated movie of changes with respect to temporal changes. At the date of publication, (1) and (2) have been attacked. Fri, 01 Jan 1993 00:00:00 GMT http://hdl.handle.net/1811/54569 1993-01-01T00:00:00Z Adkins, J. http://hdl.handle.net/1811/54553 USNC-IGY Antarctic Glaciological Data Field Work 1957 and 1958 (Ross Ice Shelf Traverse) Boyd, Walter W., Jr. The data presented in this volume were collected on the Ross Ice Shelf Traverse of 1957-1958 by Walter W. Boyd, Jr. The large number of observations for each pit precluded presentation on the scale regularly used in this series of publications. In this report each diagram represents a 3- meter pit. It should also be noted that both the rammsonde and temperature scales have been altered from those ordinarily used. The stratigraphic data sheet which accompanies most of the pits gives the dominant grain sizes of each stratum and the ratio of relative abundance of these grain sizes. Analysis of the material presented in this volume will define the average snow accumulation on the Ross Ice Shelf. "Submitted by Richard P. Goldthwait to the U.S. National Academy of Sciences, in partial fulfillment of IGY Project Number 4.10 - NSF Grant No. Y/4.10/285." Fri, 01 Jan 1960 00:00:00 GMT http://hdl.handle.net/1811/54553 1960-01-01T00:00:00Z Boyd, Walter W., Jr. http://hdl.handle.net/1811/54514 Some Operational and Mechanical Aspects of the 1959-60 Victoria Land Traverse Heine, Arnold J. This report discusses air support, vehicular loads, Sno-Cat maintenance, mechanical problems encountered, and food consumption during the 1959-60 Victoria Land Traverse. Personnel information is included in the report. Recommendations are made for various aspects of the traverse. "Submitted by Richard P. Goldthwait to the National Science Foundation in partial fulfillment of Grant No. NSF-G8992."; At head of title: "IGC Antarctic Glaciological Data Field Work 1959-60." Sun, 01 Jan 1961 00:00:00 GMT http://hdl.handle.net/1811/54514 1961-01-01T00:00:00Z Heine, Arnold J. http://hdl.handle.net/1811/54468 Antarctica: Barometer of Climate Change Antarctica plays a central role in global climate variability and change, but sustained efforts to illuminate its critical linkages to lower latitudes are lacking. A conjunction of new observational capabilities, advances in scientific understanding, and improving numerical models allow the question of the global relevance of Antarctica to be explored in detail for the first time. The first step is a comprehensive atmospheric study of the South Pacific sector of Antarctica (the SPAN project). This sector includes the Ross Sea region, an area that is closely coupled to the global atmosphere on a variety of time scales. Three aspects will be addressed: the forcing of the El Niño-Southern Oscillation phenomenon in Antarctica; the impacts of Antarctica on lower latitudes which are most pronounced over and adjacent to the western Pacific Ocean; and the testing and refinement near Ross Island (the RIME project) of coupled atmosphere-ice-ocean numerical models that are required for global simulations that realistically incorporate Antarctica. Sun, 01 Nov 1998 00:00:00 GMT http://hdl.handle.net/1811/54468 1998-11-01T00:00:00Z http://hdl.handle.net/1811/54467 Velocity Trends for Jakobshavn Glacier, Greenland for the Years 2000, 2004, 2005, and 2006 Including Procedure Manuals Farness, Katy; Jezek, Kenneth C. This report describes procedures used to process RADARSAT synthetic aperture radar data acquired over Jakobshavn Glacier, Greenland. Interferometric pairs are used to compute ice sheet surface velocities for the years 2000, 2004, 2005, and 2006 during the approximate months of November through early January of the following year. The methodology and results discussed in this report are provided in partial fulfillment of OSU’s agreement to provide remote sensing data to the Center for Remote Sensing of Ice Sheets (CReSIS) science requirements. CReSIS’s vision is to advance understanding of polar ice sheets sufficiently for the development of models that reliably predict future ice sheet contributions to sea level rise under prescribed changes in climate. Tue, 01 Jan 2008 00:00:00 GMT http://hdl.handle.net/1811/54467 2008-01-01T00:00:00Z Farness, Katy Jezek, Kenneth C. http://hdl.handle.net/1811/54227 International Tundra Experiment, Barrow Alaska: Plant and Physical Responses Under Open-Top Chambers of Dry Tundra, 1995 Bay, Christian The standard open-top chamber manipulation of the International Tundra Experiment continued at Barrow, Alaska during the summer of 1995. The monitoring of the two ITEX species Cassiope tetragona and Salix rotundifolia, in addition to 25 species was continued in the 1994-site, and a new site was established in the nearby marsh with the same design focusing on the ITEX species Carex aquatilis ssp. stans and Eriophorum angustifolium ssp. triste. In addition, all other vascular species occurring in the Meadow site were monitored. In 1995, the instrumentation of the experiment was expanded. Temperature data loggers were installed in two thirds of the plots in both sites and a few humidity data loggers were set up at the Ridge site. In 1995, the shielding of the thermistors of the temperature data loggers was improved. A comparison of the new shields with the previous type was made. In addition, an experiment was carried out to document the vertical and horizontal temperature variation in the open-top chambers. A clip harvesting experiment was initiated at the Ridge site, studying how a temperature enhancement influences the biomass production. Detailed vegetation analyses of the species composition of vascular plants and cryptogams of the Ridge plots was made and the depth of thaw was measured during the entire growth season. Although the mean summer temperature in 1995 was 1.6° C lower than in 1994 the warming effect of the OTC's was similar each year, c. 1.7° C. The cold summer affected the monitoring of Cassiope tetragona and only very few flowers emerged in the control plots while the number of flowers in the OTC's was smaller than last year, hence no continuing. No effect was seen as in high arctic Canada where the number of flowers increased significantly after the first summer of temperature manipulations. The difference between experimental and control plots in annual growth increment of + 0.5 em was just barely significant. Although this difference is the same as the preceding summer the growth was much smaller in 1995 presumably because of the cold summer. Compared to 1994 the growing season of female Salix rotundifolia started 5-9 days earlier this year in both types of plots, whereas the onset of seed dispersal is 9 days later in OTC's and 2 days in controls this year. There is no difference in the length of the growing season between OTC's and controls this year. In 1994 OTC's started 5 days earlier and controls 9 days earlier. Differences in length and weight of the leaves are the only measures that show significant differences between plants in experimental and control plots. The difference (1.8 mm) in length of the longest leaf is significantly bigger in OTC' s as in leaf weight (1.6 mg). Like the females the flowering of male Salix rotundifolia started earlier this summer. The onset of dispersal of pollen and the time of all pollen released were highly significant earlier in the OTC's. The period of pollen release is only slightly longer (c. 10%) in the experimental plots, which contrasts a 34% longer period in 1994. Mon, 01 Jan 1996 00:00:00 GMT http://hdl.handle.net/1811/54227 1996-01-01T00:00:00Z Bay, Christian http://hdl.handle.net/1811/54226 On the Late Precambrian-Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Mountains, Antarctica, and a Comparison With Rocks of Similar Age for Southern Africa Stump, Edmund The non-intrusive portion of the late Precambrian-early Paleozoic basement complex in the Queen Maud Mountains, Antarctica, consists of graywacke-shale sequences of the Beardmore Group (Goldie, Duncan, and LaGorce Formations), rhyolite porphyries of the Wyatt Formation, and rhyolite porphyries, minor basalts and carbonate, clastic and volcaniclastic metasedimentary rocks of the Taylor and Fairweather Formations. A model for the evolution of the Ross Orogen between Byrd Glacier and the Pensacola Mountains is presented combining results of this study with published reports from adjacent areas. The deep-sea fan deposits of the Beardmore Group are conformably overlain and intruded by extrusive and hypabyssal portions of the Wyatt Formation. An arc of volcanic islands producing ash-flow tuffs, ash-fall tuffs and lavas, and minor basaltic lavas was active in the early Cambrian. Sediments accumulated in association with the volcanic rocks. All of these rocks were deformed, intruded and metamorphosed to varying degrees during the Ross Orogeny which ended by middle Ordovician. Rocks of the Damara Orogen of southern Africa were probably linearly continuous with the Ross Orogen prior to the breakup of Gondwanaland. A clastic pulse recognized in late Precambrian sediments in the Cape, the Vanrhynsdorp area and the Nama Basin is interpreted as representing the initiation of the Damara Orogeny in South and South West Africa. A comparison of the evolution of the Ross and Damara Orogens concludes that the Cape region in South Africa occupied a tectonic regime transitional between the regime of cratonic collision in South West Africa, where orogeny was sustained from the late Precambrian to the middle Orodovician, and the regime of subduction of oceanic crust beneath a continental margin in Antarctica, where two episodes of sedimentation and deformation occurred. Wed, 01 Dec 1976 00:00:00 GMT http://hdl.handle.net/1811/54226 1976-12-01T00:00:00Z Stump, Edmund http://hdl.handle.net/1811/54225 Environmental Histories from Whitefish and Imuruk Lakes, Seward Peninsula, Alaska. Shackleton, Jonathan Sediment cores from Imuruk and White fish Lakes, Seward Peninsula, Alaska, were analyzed for pollen and dated using radiocarbon techniques. The paleomagnetic study greatly extended the range of the radiocarbon dating by providing evidence for the occurrence of the Blake paleomagnetic event which occurred 100,000-125,000 years ago. Imuruk Core V appears to be about 140,000-150,000 years old. Radiocarbon dates show that the record was truncated about 10,000 years ago. Pollen analysis, supported by these dates, suggests that the Wisconsin in the Arctic consisted of three major phases: a cold period when the vegetation was dominated by Gramineae, Cyperaceae, and Artemisia, lasting from about 80,000 until 55,000 B.P. Then there was a warmer interstadial when Betula, Alnus, and Picea became much more abundant between 55,000 and 35,000 B.P. Finally there was another cold period with steppe-tundra vegetation which began about 35,000 B.P. and lasted until 10,000-15,000 B.P. This chronology is very similar to that suggested for Siberia. The dates are not precise and the history may be found consistent with the dating of glacial events from other parts of the world. There is evidence from Imuruk to suggest that the Wisconsin was preceded by a long period of declining temperatures during the Sangamon. The vegetation then consisted of shrub tundra with Picea and Alnus often above trace amounts. The Whitefish Lake record spans at least the past 10,000 years. The pollen record, the first Holocene record from this region, reflects a vegetation in which Cyperaceae and Alnus are abundant. The record indicates that there was no significant climatic change during the Holocene. This study provides the best dated, well documented, long Arctic pollen record that gives a good history of the major vegetation changes and, hence, a good indication of the nature of the climatic record of the Wisconsin in the Arctic. Fri, 01 Jan 1982 00:00:00 GMT http://hdl.handle.net/1811/54225 1982-01-01T00:00:00Z Shackleton, Jonathan http://hdl.handle.net/1811/53704 Determination of Absolute Gravity at BPRC/US Polar Rock Repository Bhattacharya, Indrajit; Wuite, Jan; Jezek, Kenneth C. We determined absolute gravity at a base station located in the north-east corner of the U.S. Polar Rock Repository based on two field surveys conducted in summer 2005. We used a CG-5 Scintrex Autograv System for our measurements. The meter can measure relative gravity to a precision of 0.001 mGal. To find the absolute gravity we visited three tie-point sites, one located at the OSU Main Library, one in downtown Columbus and one south-west of town near Bolton Airfield. The sites were set up by the NOAA and NGS and absolute gravity was determined using a relative gravimeter (Lacoste-Romberg) which in turn was tied back to a site of known gravity. An absolute gravity measurement was conducted by NOAA-NGS in summer 2005 at OSU, in Mendenhall Laboratory. At each of the sites, we recorded a series of gravity measurements. These were subsequently used to calculate absolute gravity at the rock repository base station where measurements were taken at the start and end of the survey. We found the absolute gravity at the base station to be 980082.070 mGal with an error of about 0.035 mGal. This report is a summary of this investigation. Wed, 22 Nov 2006 00:00:00 GMT http://hdl.handle.net/1811/53704 2006-11-22T00:00:00Z Bhattacharya, Indrajit Wuite, Jan Jezek, Kenneth C. http://hdl.handle.net/1811/53703 Surface Roughness Measurements on the Western Greenland Ice Sheet Jezek, Kenneth C. This report summarizes in situ observations of snow surface roughness in relatively benign regions of the western Greenland Ice Sheet. The data were collected in June and August, 1991, June 1992, June 1993 and June 1995. The observations were used to support the interpretation of airborne SAR and laser measurements as well as ERS-1 and JERS-1 spaceborne SAR observations. Surface characterization measurements complemented other, coincident, in situ experiments including C and Ku band surface scatterometer observations, ultra-wideband (operations from 0.5 to 18 GHz) scatterometer measurements, large scale surface topography measured by leveling, and the deployment of radar corner reflectors. This report focuses on snow-surface roughness measurements, both quantitative and anecdotal. Quantitative surface roughness was measured with a large, 1 m long comb gauge and with hand-held comb gauges. Included in the report are qualitative observations of peak-to-peak surface roughness which were frequently commented upon in field notebooks. Also included are numerous photographs. Selecting type areas for measuring roughness was challenging because of the number of surface morphologies distributed in each study areas. A severe limitation of the data is likely to be the short length of the roughness measurements. Sampling length may lead to biased estimates of correlation length. Additional measurements were made of the near surface firn by excavating 1-2 m deep pits. These observations included firn density, grain size, grain shape, temperature, and stratigraphy. 10 m or deeper firn cores were collected from a few sites and analyzed for density, grain size and shape. Surface roughness was frequently measured on ice layers and other inclusions observed in the firn column and some of these data are included for comparison to the snow-surface properties. Fri, 12 Oct 2007 00:00:00 GMT http://hdl.handle.net/1811/53703 2007-10-12T00:00:00Z Jezek, Kenneth C. http://hdl.handle.net/1811/53687 Glacial Geology of Adams Inlet, Southeastern Alaska McKenzie, Garry D. Adams Inlet is in the rolling and rugged Chilkat-Baranof Mountains in the eastern part of Glacier Bay National Monument, Alaska. Rapid deglaciation of the area in the first half of the twentieth century has exposed thick sections of post-Hypsithermal deposits and some of the oldest unconsolidated deposits in Glacier Bay. About 30 percent of the area is underlain by unconsolidated material; 14 percent of the area is still covered with ice. The formations present in Adams Inlet are, from the oldest to the youngest: Granite Canyon till, Forest Creek glaciomarine sediments, Van Horn Formation (lower gravel member), Adams lacustrine-till complex, Berg gravel and sand, Glacier Bay drift, and Seal River gravel. No evidence of an early post Wisconsin ice advance, indicated by the Muir Formation in nearby Muir Inlet, is present in Adams Inlet. Following deposition of the late Wisconsin Granite Canyon till, the Forest Creek glaciomarine sediments were laid down in water 2 to 20 m deep; they now occur as much as 30 m above present sea level. A volcanic ash unit within these sediments may have been derived from Mt. Edgecumbe. Wood at the top of this formation is dated at 10,940 ± 155 years B.P. (I-2395). Gravel infilling (lower member of the Van Horn Formation) of the valleys tributary to Adams Inlet apparently followed retreat of the sea, although there are no deposits in Adams Inlet dated between about 10,000 and 4,000 years B.P. By 3,700 B.P. these gravels had reached 3 m above present sea level in the vicinity of Adams Inlet. About 7,000 years ago gravel was being deposited near present sea level in Muir Inlet, and several episodes of lakes occurred in Muir Inlet between 4,500 and 2,200 years B.P. Advancing ice in Glacier Bay had probably reached Reid Inlet by 4,680 ± 160 years B.P. (Y-9), and in upper Muir Inlet ice deposited till over wood about 2,120 ± 115 years B.P. (I-1610). Damming of the entrance to Adams Inlet, probably originally by outwash and later by ice from Glacier Bay, resulted in the formation of glacial Lake Adams about 1,700 B.P. The ice-dam hypothesis is supported by a date of 1,540 ± 130 years (Y-4) on wood under till on the south side of Geikie Inlet. Bottom deposits (Adams Formation) of Lake Adams were disturbed by several advances of ice from north of Adams Inlet into tributary valleys to the south. Retreat of the ice, possibly during the Little Optimum (1150-1300 A.D.), to the central part of Adams Inlet was followed by outwash filling (Berg Formation) of the valleys south of Adams Inlet. The late Neoglacial advance formed a kame moraine at Endicott Lake where ice remained until about 1830. Several glacial lakes formed in tributary valleys during deglaciation. Lacustrine deposits of these lakes, and glaciofluvial deposits and tills constitute the Glacier Bay Formation in Adams Inlet. The surface elevation of the ice in Adams Inlet in 1890 was 380 m, about half of the elevation during the Neoglacial maximum. By 1941, about l5 km2 of ice remained in Adams Inlet; this ice was less than 100 m in elevation. During this period the rate of wastage had been 7.9 m per year. Ice-contact deposits such as eskers, kames, and pitted outwash are common; buried ice is still present in parts of Adams Inlet. Outwash deltas are rapidly building into Adams Inlet. Sun, 01 Nov 1970 00:00:00 GMT http://hdl.handle.net/1811/53687 1970-11-01T00:00:00Z McKenzie, Garry D. http://hdl.handle.net/1811/53686 USNC-IGY Antarctic glaciological data field work 1958 and 1959 (Geology of the Horlick Mountains) Goldthwait, Richard P.; Long, William E. During a reconnaissance flight over the route of the Byrd Station 1958-59 over-snow traverse which was to pass along the front of the Horlick Range, the sedimentary aspect and structure of the mountains was noted. Plans were made to include a visit to this portion of the range during the course of the traverse. The party of six in three Sno-Cats left Byrd Station on November 1, 1958, to make seismological, glaciological, and geological investigations of the ice cap. When the course of travel reached the appropriate position for easy access to the mountains, the vehicles were turned toward the rock and driven to within three miles of the snow-rock junction. Surface roughness at this point broke the crevasse detector boom and the Horlick Mountain camp was established. On 6 December 1958 four members of the traverse party set out to make a geological investigation of the rocks that formed the mountains. The party consisted of Dr. Charles Bentley (traverse leader), Jack Long, Fred Darling and William E. Long. The party climbed 4,000 feet to the summit of one peak making collections and measurements of altitudes and elevations. Nineteen hours after leaving the camp the last of the group returned to the camp. The stratigraphic section described in the report is located in the central group of the Horlick Mountains. This group of mountains is about 20 miles long and 5 to 10 miles wide. The northern limit of the range is sharply marked by an escarpment that forms impressive cliffs and an almost continuous front. The southern limit of the mountain group is not so well defined because of the higher ice cap surface to the south and the southerly dip of the mountain blocks. The eastern and western ends of the mountains are quite sharp suggesting transverse faulting to the perpendicular to the major escarpment. Submitted by Richard P. Goldthwait to the U.S. National Committee for the IGY, National Academy of Sciences in partial fulfillment of IGY Project No. 4.10, NSF Grant No. Y/4.10/285. Tue, 01 Sep 1959 00:00:00 GMT http://hdl.handle.net/1811/53686 1959-09-01T00:00:00Z Goldthwait, Richard P. Long, William E. http://hdl.handle.net/1811/53685 USNC-IGY Antarctic Glaciological Data Field Work 1958 and 1959 (Preliminary Report on the Bedrock Geology of the Windmill Islands) Goldthwait, Richard P.; Robertson, Richard The preliminary report is based on field observations made during 1958, and on the hand specimen identification of samples at The Ohio State University Research Foundation. The author, Richard Robertson, was a glaciologist with the wintering-over group at Wilkes IGY Station (66°15’S, 110°31’E) which is on the Antarctic coast in the Windmill Islands, south of Perth, Australia. This group of islands is probably the most extensive rock exposure between the Bunger Hills, 250 miles to the west, and King George V Land, 1000 miles to the east. The islands are contained in a rectangle 32 miles long and 9 miles wide, with the long side being in a northerly direction. Submitted by Richard P. Goldthwait to the U.S. National Committee for the IGY, National Academy of Sciences in partial fulfillment of IGY Project No. 4.10, NSF Grant No. Y/4.10/285. Tue, 01 Sep 1959 00:00:00 GMT http://hdl.handle.net/1811/53685 1959-09-01T00:00:00Z Goldthwait, Richard P. Robertson, Richard http://hdl.handle.net/1811/53671 Visualizing Changing Landscapes: Disappearance of the Scioto Lobe of the Laurentide Ice Sheet, Ohio. A Field Guide Leavell, Daniel; Angle, Mike; Mark, Bryan G.; Howat, Ian This field trip guide was produced for participants of the International Glaciological Society Symposium, “Earth’s Disappearing Ice: Drivers, Responses and Impacts,” which was held at the Byrd Polar Research Center in August 2010. The field trip began at Ohio State University in Columbus and continued to Licking County, including stops in Granville, Alexandria, St. Louisville and Newark. Landforms associated with the Scioto Lobe of the Laurentide Ice Sheet (LIS) in east central Ohio during the Last Glacial Maximum (LGM) reveal the processes, materials and environments of the glacier system. The authors reconstruct the paleogeography and glacial history to provide a model of changes at and near the ice margin on this glaciated section of the Appalachian Plateaus Province at 40°N. In eastern Licking County, kames, terraces, moraines, ice-marginal lake deposits and reversed drainage systems record the impact of the glacier at and beyond the terminus. Field stops highlight glacial, glacifluvial, and glacilacustrine landforms and related materials (e.g. till, outwash gravel, lake sediments and peat deposits). Wed, 18 Aug 2010 00:00:00 GMT http://hdl.handle.net/1811/53671 2010-08-18T00:00:00Z Leavell, Daniel Angle, Mike Mark, Bryan G. Howat, Ian http://hdl.handle.net/1811/53654 Surface Elevation and Velocity Changes on the South Central Greenland Ice Sheet: 1980-2011 - Data Summary Jezek, Kenneth C. Glaciological observations were made from 1980 to 2011 at a network of measurement sites on the south central Greenland Ice Sheet. Measurements include in situ observations begun by I. Whillans, Wallops Flight Facility airborne lidar measurements, in situ measurement made as part of PARCA, ICESat measurements, and in situ measurement made by the author. Data are summarized here in tabular form. A digital spread sheet of the results is also available. Graphical depictions and a discussion of the results can be found in Jezek (2012). Sun, 01 Jan 2012 00:00:00 GMT http://hdl.handle.net/1811/53654 2012-01-01T00:00:00Z Jezek, Kenneth C. http://hdl.handle.net/1811/53605 National and Trans-National Agendas in Antarctic Research from the 1950s and Beyond The 3rd Workshop of the SCAR Action Group on the History of Antarctic Research was organized by Raimund E. Goerler, the Assistant Director of the Ohio State University Libraries and his colleagues at the Byrd Polar Research Center from 25-26 October 2007. The workshop discussed “National and transnational agendas in Antarctic research from the 1950s and beyond.” About 20 participants from Australia, Chile, Germany, Great Britain, Sweden and the United States, attended the workshop held at the Byrd Polar Research Center. The report contains the program, papers and abstracts from the workshop. Sun, 01 Jan 2012 00:00:00 GMT http://hdl.handle.net/1811/53605 2012-01-01T00:00:00Z http://hdl.handle.net/1811/53556 William J. Cromie testing ice strength in front of crevasse detector Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53556 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53560 William J. Cromie with sno-cat nic-named Tweety Pie Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53560 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53591 RIST crew prepares seismic experment Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53591 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53424 Twin Otter blown over in storm Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53424 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53559 William J. Cromie surveying Ross Ice Shelf near Little America Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53559 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53603 Seal Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53603 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53602 Seal Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53602 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53601 Seal explores ice shelf Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53601 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53600 Seal checks out oceanographic hole near Kianan bay Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53600 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53599 U.S. Navy cargo ships Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53599 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53598 Scientists relax after work. (Left to right) Herfried Hoinkes, Hans Bengaard, Sam Wilson, Vladimir Rostorguev and Ron Viets Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53598 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53597 Guitarist Bill Cumbie, Boy Scout Richard Chappell on piano (red plaid shirt), and others put together a band Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53597 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53596 Hugh Bennett (right) and William J. Cromie perform in a Little America Theater Group play Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53596 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53595 Navy supply ship Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53595 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53594 William J. Cromie skiing on Ross Ice Shelf Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53594 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53593 Hugh (Romeo) Bennett (right) and William J. (Juliet) Cromie entertain Little Americans Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53593 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53592 Front of shelf as seen from ship Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53592 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53590 Ship carrying men and supplies Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53590 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53589 Equipment transferred from ship to tractor-pulled sleds Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53589 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53588 Navy men relax while loading cargo sleds Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53588 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53587 Little America V supplies wait to be moved Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53587 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53586 Tractor attempts to move cargo to sled Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53586 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53585 Tractor moves cargo landed by ships Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53585 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53584 Explosion in crevasse Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53584 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53583 Sno-cat with crevasse detector Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53583 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53582 Atop the sno-cat Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53582 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53581 Crevasse marked with flags Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53581 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53580 LOOK magazine visitors leave. Writer Tom Morgan (red cap) waves goodbye Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53580 1957-01-01T00:00:00Z Cromie, William J. http://hdl.handle.net/1811/53579 Bert Crary taking sites Cromie, William J. Credit: William J. Cromie Tue, 01 Jan 1957 00:00:00 GMT http://hdl.handle.net/1811/53579 1957-01-01T00:00:00Z Cromie, William J.