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Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica
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| Zeitschriftentitel: | Journal of Glaciology |
|---|---|
| Personen und Körperschaften: | , |
| In: | Journal of Glaciology, 29, 1983, 101, S. 118-126 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Cambridge University Press (CUP)
|
| Schlagwörter: |
| author_facet |
Jezek, Kenneth C. Bentley, Charles R. Jezek, Kenneth C. Bentley, Charles R. |
|---|---|
| author |
Jezek, Kenneth C. Bentley, Charles R. |
| spellingShingle |
Jezek, Kenneth C. Bentley, Charles R. Journal of Glaciology Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica Earth-Surface Processes |
| author_sort |
jezek, kenneth c. |
| spelling |
Jezek, Kenneth C. Bentley, Charles R. 0022-1430 1727-5652 Cambridge University Press (CUP) Earth-Surface Processes http://dx.doi.org/10.1017/s0022143000005189 <jats:title>Abstract</jats:title><jats:p>Surface and airborne radar sounding data were used to identify and map fields of bottom crevasses on the Ross Ice Shelf. Two major concentrations of crevasses were found, one along the grid-eastern grounding line and another, made up of eight smaller sites, grid west of Crary Ice Rise. Based upon an analysis of bottom crevasse heights and locations, and of the strength of radar waves diffracted from the apex and bottom corners of the crevasses, we conclude that the crevasses are formed at discrete locations on the ice shelf. By comparing the locations of crevasse formation with ice thickness and bottom topography, we conclude that most of the crevasse sites are associated with ice rises. Hence we have postulated that six ice rises, in addition to Crary Ice Rise and Roosevelt Island, exist in the grid-western sector of the ice shelf. These “pinning points” may be important for interpreting the dynamics of the West Antarctic ice sheet.</jats:p> Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica Journal of Glaciology |
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Cambridge University Press (CUP), 1983 |
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Cambridge University Press (CUP), 1983 |
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0022-1430 1727-5652 |
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1983 |
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Journal of Glaciology |
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| title |
Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_unstemmed |
Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_full |
Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_fullStr |
Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_full_unstemmed |
Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_short |
Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_sort |
field studies of bottom crevasses in the ross ice shelf, antarctica |
| topic |
Earth-Surface Processes |
| url |
http://dx.doi.org/10.1017/s0022143000005189 |
| publishDate |
1983 |
| physical |
118-126 |
| description |
<jats:title>Abstract</jats:title><jats:p>Surface and airborne radar sounding data were used to identify and map fields of bottom crevasses on the Ross Ice Shelf. Two major concentrations of crevasses were found, one along the grid-eastern grounding line and another, made up of eight smaller sites, grid west of Crary Ice Rise. Based upon an analysis of bottom crevasse heights and locations, and of the strength of radar waves diffracted from the apex and bottom corners of the crevasses, we conclude that the crevasses are formed at discrete locations on the ice shelf. By comparing the locations of crevasse formation with ice thickness and bottom topography, we conclude that most of the crevasse sites are associated with ice rises. Hence we have postulated that six ice rises, in addition to Crary Ice Rise and Roosevelt Island, exist in the grid-western sector of the ice shelf. These “pinning points” may be important for interpreting the dynamics of the West Antarctic ice sheet.</jats:p> |
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| author | Jezek, Kenneth C., Bentley, Charles R. |
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| description | <jats:title>Abstract</jats:title><jats:p>Surface and airborne radar sounding data were used to identify and map fields of bottom crevasses on the Ross Ice Shelf. Two major concentrations of crevasses were found, one along the grid-eastern grounding line and another, made up of eight smaller sites, grid west of Crary Ice Rise. Based upon an analysis of bottom crevasse heights and locations, and of the strength of radar waves diffracted from the apex and bottom corners of the crevasses, we conclude that the crevasses are formed at discrete locations on the ice shelf. By comparing the locations of crevasse formation with ice thickness and bottom topography, we conclude that most of the crevasse sites are associated with ice rises. Hence we have postulated that six ice rises, in addition to Crary Ice Rise and Roosevelt Island, exist in the grid-western sector of the ice shelf. These “pinning points” may be important for interpreting the dynamics of the West Antarctic ice sheet.</jats:p> |
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| imprint | Cambridge University Press (CUP), 1983 |
| imprint_str_mv | Cambridge University Press (CUP), 1983 |
| institution | DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229 |
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| physical | 118-126 |
| publishDate | 1983 |
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| series | Journal of Glaciology |
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| spelling | Jezek, Kenneth C. Bentley, Charles R. 0022-1430 1727-5652 Cambridge University Press (CUP) Earth-Surface Processes http://dx.doi.org/10.1017/s0022143000005189 <jats:title>Abstract</jats:title><jats:p>Surface and airborne radar sounding data were used to identify and map fields of bottom crevasses on the Ross Ice Shelf. Two major concentrations of crevasses were found, one along the grid-eastern grounding line and another, made up of eight smaller sites, grid west of Crary Ice Rise. Based upon an analysis of bottom crevasse heights and locations, and of the strength of radar waves diffracted from the apex and bottom corners of the crevasses, we conclude that the crevasses are formed at discrete locations on the ice shelf. By comparing the locations of crevasse formation with ice thickness and bottom topography, we conclude that most of the crevasse sites are associated with ice rises. Hence we have postulated that six ice rises, in addition to Crary Ice Rise and Roosevelt Island, exist in the grid-western sector of the ice shelf. These “pinning points” may be important for interpreting the dynamics of the West Antarctic ice sheet.</jats:p> Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica Journal of Glaciology |
| spellingShingle | Jezek, Kenneth C., Bentley, Charles R., Journal of Glaciology, Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica, Earth-Surface Processes |
| title | Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_full | Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_fullStr | Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_full_unstemmed | Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_short | Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| title_sort | field studies of bottom crevasses in the ross ice shelf, antarctica |
| title_unstemmed | Field Studies of Bottom Crevasses in the Ross Ice Shelf, Antarctica |
| topic | Earth-Surface Processes |
| url | http://dx.doi.org/10.1017/s0022143000005189 |