Deep ice drilling, bedrock coring and dust logging with the Rapid Access Ice Drill (RAID) at Minna Bluff, Antarctica
AbstractRapid Access Ice Drill is a new drilling technology capable of quickly accessing the glacial bed of Antarctic ice sheets, retrieving ice core and rock core samples, and providing boreholes for downhole logging of physical properties. Scientific goals include searching for old ice near the gl...
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ftcdlib:oai:escholarship.org:ark:/13030/qt90g1645w 2023-05-15T13:29:08+02:00 Deep ice drilling, bedrock coring and dust logging with the Rapid Access Ice Drill (RAID) at Minna Bluff, Antarctica Goodge, John W Severinghaus, Jeffrey P Johnson, Jay Tosi, Delia Bay, Ryan 324 - 339 2021-09-01 application/pdf https://escholarship.org/uc/item/90g1645w unknown eScholarship, University of California qt90g1645w https://escholarship.org/uc/item/90g1645w public Annals of Glaciology, vol 62, iss 85-86 Antarctic glaciology glacial tills ice and climate ice coring subglacial sediments Atmospheric Sciences Geophysics Physical Geography and Environmental Geoscience Meteorology & Atmospheric Sciences article 2021 ftcdlib 2023-02-13T18:45:36Z AbstractRapid Access Ice Drill is a new drilling technology capable of quickly accessing the glacial bed of Antarctic ice sheets, retrieving ice core and rock core samples, and providing boreholes for downhole logging of physical properties. Scientific goals include searching for old ice near the glacial bed and sampling subglacial bedrock. During field trials near McMurdo Station on a piedmont glacier at Minna Bluff in the 2019–20 austral summer, we successfully completed a ‘top-to-bottom’ operational sequence in three boreholes by (1) augering through firn, (2) creating a borehole packer seal in non-porous ice, (3) establishing fluid circulation, (4) quickly drilling a borehole in ice at penetration rates up to 1.2 m min−1, (5) acquiring a short ice core at depth, (6) penetrating the glacial bed at a depth of ~677 m, (7) recovering a 3.2 m core of ice, basal till and subglacial bedrock, (8) optically logging the borehole on wireline, (9) testing hydrofracture potential by overpressuring the borehole fluid and (10) operating in an environmentally benign yet rapid field mode. Minna Bluff testing, therefore, demonstrates the effectiveness of this integrated system to drill rapidly through thick ice and penetrate across the glacial bed to take cores of bedrock. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctica ice core University of California: eScholarship Antarctic Austral McMurdo Station ENVELOPE(166.667,166.667,-77.850,-77.850) Minna Bluff ENVELOPE(166.417,166.417,-78.517,-78.517) |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Antarctic glaciology glacial tills ice and climate ice coring subglacial sediments Atmospheric Sciences Geophysics Physical Geography and Environmental Geoscience Meteorology & Atmospheric Sciences |
spellingShingle |
Antarctic glaciology glacial tills ice and climate ice coring subglacial sediments Atmospheric Sciences Geophysics Physical Geography and Environmental Geoscience Meteorology & Atmospheric Sciences Goodge, John W Severinghaus, Jeffrey P Johnson, Jay Tosi, Delia Bay, Ryan Deep ice drilling, bedrock coring and dust logging with the Rapid Access Ice Drill (RAID) at Minna Bluff, Antarctica |
topic_facet |
Antarctic glaciology glacial tills ice and climate ice coring subglacial sediments Atmospheric Sciences Geophysics Physical Geography and Environmental Geoscience Meteorology & Atmospheric Sciences |
description |
AbstractRapid Access Ice Drill is a new drilling technology capable of quickly accessing the glacial bed of Antarctic ice sheets, retrieving ice core and rock core samples, and providing boreholes for downhole logging of physical properties. Scientific goals include searching for old ice near the glacial bed and sampling subglacial bedrock. During field trials near McMurdo Station on a piedmont glacier at Minna Bluff in the 2019–20 austral summer, we successfully completed a ‘top-to-bottom’ operational sequence in three boreholes by (1) augering through firn, (2) creating a borehole packer seal in non-porous ice, (3) establishing fluid circulation, (4) quickly drilling a borehole in ice at penetration rates up to 1.2 m min−1, (5) acquiring a short ice core at depth, (6) penetrating the glacial bed at a depth of ~677 m, (7) recovering a 3.2 m core of ice, basal till and subglacial bedrock, (8) optically logging the borehole on wireline, (9) testing hydrofracture potential by overpressuring the borehole fluid and (10) operating in an environmentally benign yet rapid field mode. Minna Bluff testing, therefore, demonstrates the effectiveness of this integrated system to drill rapidly through thick ice and penetrate across the glacial bed to take cores of bedrock. |
format |
Article in Journal/Newspaper |
author |
Goodge, John W Severinghaus, Jeffrey P Johnson, Jay Tosi, Delia Bay, Ryan |
author_facet |
Goodge, John W Severinghaus, Jeffrey P Johnson, Jay Tosi, Delia Bay, Ryan |
author_sort |
Goodge, John W |
title |
Deep ice drilling, bedrock coring and dust logging with the Rapid Access Ice Drill (RAID) at Minna Bluff, Antarctica |
title_short |
Deep ice drilling, bedrock coring and dust logging with the Rapid Access Ice Drill (RAID) at Minna Bluff, Antarctica |
title_full |
Deep ice drilling, bedrock coring and dust logging with the Rapid Access Ice Drill (RAID) at Minna Bluff, Antarctica |
title_fullStr |
Deep ice drilling, bedrock coring and dust logging with the Rapid Access Ice Drill (RAID) at Minna Bluff, Antarctica |
title_full_unstemmed |
Deep ice drilling, bedrock coring and dust logging with the Rapid Access Ice Drill (RAID) at Minna Bluff, Antarctica |
title_sort |
deep ice drilling, bedrock coring and dust logging with the rapid access ice drill (raid) at minna bluff, antarctica |
publisher |
eScholarship, University of California |
publishDate |
2021 |
url |
https://escholarship.org/uc/item/90g1645w |
op_coverage |
324 - 339 |
long_lat |
ENVELOPE(166.667,166.667,-77.850,-77.850) ENVELOPE(166.417,166.417,-78.517,-78.517) |
geographic |
Antarctic Austral McMurdo Station Minna Bluff |
geographic_facet |
Antarctic Austral McMurdo Station Minna Bluff |
genre |
Annals of Glaciology Antarc* Antarctic Antarctica ice core |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctica ice core |
op_source |
Annals of Glaciology, vol 62, iss 85-86 |
op_relation |
qt90g1645w https://escholarship.org/uc/item/90g1645w |
op_rights |
public |
_version_ |
1765998670055997440 |