{"dp_type": "Dataset", "free_text": "Borehole Video"}
[{"awards": "9615420 Kamb, Barclay", "bounds_geometry": ["POINT(-136.404633 -82.39955)"], "date_created": "Thu, 14 Feb 2013 00:00:00 GMT", "description": "This data set is a collection of video data of basal ice taken in a borehole on the Kamb Ice Stream in West Antarctica. Ice streams are an expression of the inherent instability of the West Antarctic Ice Sheet, and their behavior is a key control on the overall ice-sheet mass balance. Understanding the response of the ice sheet in a warming climate requires a thorough understanding of the internal dynamics of ice streams, in addition to the relevant ice-atmosphere and ice-ocean interactions in the region. The basal environment of the ice streams and of many glaciers is a key scientific interest, including conditions, mainly basal sliding, that lead to fast flow of the ice. The purpose of this data set is to present a review of the full range of original video recordings from the basal ice of the Kamb Ice Stream. Direct observations at the ice-stream bed are a crucial complement to modeling efforts predicting future scenarios in a warming climate.", "east": -136.404633, "geometry": ["POINT(-136.404633 -82.39955)"], "keywords": "Antarctica; Borehole Video; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Kamb Ice Stream; Photo/video; Photo/Video", "locations": "Kamb Ice Stream; Antarctica", "north": -82.39955, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Engelhardt, Hermann", "project_titles": "Basal Conditions of Ice Stream D and Related Borehole Studies of Antarctic Ice Stream Mechanics", "projects": [{"proj_uid": "p0000181", "repository": "USAP-DC", "title": "Basal Conditions of Ice Stream D and Related Borehole Studies of Antarctic Ice Stream Mechanics"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -82.39955, "title": "Videos of Basal Ice in Boreholes on the Kamb Ice Stream in West Antarctica", "uid": "609528", "west": -136.404633}, {"awards": "0335330 Waddington, Edwin", "bounds_geometry": ["POLYGON((-180 -60,-144 -60,-108 -60,-72 -60,-36 -60,0 -60,36 -60,72 -60,108 -60,144 -60,180 -60,180 -63,180 -66,180 -69,180 -72,180 -75,180 -78,180 -81,180 -84,180 -87,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -87,-180 -84,-180 -81,-180 -78,-180 -75,-180 -72,-180 -69,-180 -66,-180 -63,-180 -60))"], "date_created": "Tue, 15 Jun 2010 00:00:00 GMT", "description": "This data set consists of scripts and code designed for modeling the properties of boreholes in polar ice sheets, under a range of variations in the borehole geometry, firn layering, and camera pointing and position. The data set contains two folders. One includes two perl scripts and a piece of C code, along with directions for setting up and running a Monte Carlo model of photons traveling to and from a borehole in the firn. The second includes scripts for generating ray-tracing input files to be used with the POV-Ray package (a standard, free raytracing package) to generate simulated borehole video frames based on the results of the Monte Carlo model. The project was conducted between February 2005 and April 2010.\n\nThe codes to run the models are available via FTP, in Perlscript (.pl) and C code.", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Modeling Code", "locations": null, "north": -60.0, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Hawley, Robert L.; Smith, Ben; Waddington, Edwin D.; Fudge, T. J.", "project_titles": "Borehole Optical Stratigraphy: Ice Microphysics, Climate Change, and the Optical Properties of Firn", "projects": [{"proj_uid": "p0000016", "repository": "USAP-DC", "title": "Borehole Optical Stratigraphy: Ice Microphysics, Climate Change, and the Optical Properties of Firn"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "Borehole Optical Stratigraphy Modeling, Antarctica", "uid": "609468", "west": -180.0}]
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| Dataset Title/Abstract/Map | NSF Award(s) | Date Created | PIs / Scientists | Project Links | Abstract | Bounds Geometry | Geometry | Selected | Visible |
|---|---|---|---|---|---|---|---|---|---|
|
Videos of Basal Ice in Boreholes on the Kamb Ice Stream in West Antarctica
|
9615420 |
2013-02-14 | Engelhardt, Hermann |
Basal Conditions of Ice Stream D and Related Borehole Studies of Antarctic Ice Stream Mechanics |
This data set is a collection of video data of basal ice taken in a borehole on the Kamb Ice Stream in West Antarctica. Ice streams are an expression of the inherent instability of the West Antarctic Ice Sheet, and their behavior is a key control on the overall ice-sheet mass balance. Understanding the response of the ice sheet in a warming climate requires a thorough understanding of the internal dynamics of ice streams, in addition to the relevant ice-atmosphere and ice-ocean interactions in the region. The basal environment of the ice streams and of many glaciers is a key scientific interest, including conditions, mainly basal sliding, that lead to fast flow of the ice. The purpose of this data set is to present a review of the full range of original video recordings from the basal ice of the Kamb Ice Stream. Direct observations at the ice-stream bed are a crucial complement to modeling efforts predicting future scenarios in a warming climate. | ["POINT(-136.404633 -82.39955)"] | ["POINT(-136.404633 -82.39955)"] | false | false |
|
Borehole Optical Stratigraphy Modeling, Antarctica
|
0335330 |
2010-06-15 | Hawley, Robert L.; Smith, Ben; Waddington, Edwin D.; Fudge, T. J. |
Borehole Optical Stratigraphy: Ice Microphysics, Climate Change, and the Optical Properties of Firn |
This data set consists of scripts and code designed for modeling the properties of boreholes in polar ice sheets, under a range of variations in the borehole geometry, firn layering, and camera pointing and position. The data set contains two folders. One includes two perl scripts and a piece of C code, along with directions for setting up and running a Monte Carlo model of photons traveling to and from a borehole in the firn. The second includes scripts for generating ray-tracing input files to be used with the POV-Ray package (a standard, free raytracing package) to generate simulated borehole video frames based on the results of the Monte Carlo model. The project was conducted between February 2005 and April 2010. The codes to run the models are available via FTP, in Perlscript (.pl) and C code. | ["POLYGON((-180 -60,-144 -60,-108 -60,-72 -60,-36 -60,0 -60,36 -60,72 -60,108 -60,144 -60,180 -60,180 -63,180 -66,180 -69,180 -72,180 -75,180 -78,180 -81,180 -84,180 -87,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -87,-180 -84,-180 -81,-180 -78,-180 -75,-180 -72,-180 -69,-180 -66,-180 -63,-180 -60))"] | ["POINT(0 -89.999)"] | false | false |
