The Regional Distribution of Surface Mass Balance in Mizuho Plateau, Antarctica
Mizuho Plateau is classified into an ablation zone and three different accumulation zones from the regional distribution of thickness of the annual layer accumulated snow measured during ten years beginning in 1968 using the snow stake method, and from the locations of the ablation area provided by...
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The Institute of Low Temperature Science, Hokkaido University
1981
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ftnipr:oai:nipr.repo.nii.ac.jp:00001191 2023-05-15T13:47:59+02:00 The Regional Distribution of Surface Mass Balance in Mizuho Plateau, Antarctica Tomomi Yamada Gorow Wakahama 1981-10 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1191 http://id.nii.ac.jp/1291/00001191/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1191&item_no=1&attribute_id=18&file_no=1 en eng The Institute of Low Temperature Science, Hokkaido University https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1191 http://id.nii.ac.jp/1291/00001191/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 19, 307-320(1981-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1191&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1981 ftnipr 2022-11-12T19:42:00Z Mizuho Plateau is classified into an ablation zone and three different accumulation zones from the regional distribution of thickness of the annual layer accumulated snow measured during ten years beginning in 1968 using the snow stake method, and from the locations of the ablation area provided by images of ERTS satellite. A snow stake along a traverse route gave the thickness of the annual layer at a given place in a given year; the thickness there in another year in which measurements were not made was obtained by extrapolation, using a value of annual variation in areal average in each of the zones; then, the thickness was averaged over the ten years. In addition, stratigraphic data provided thicknesses and the density profile of the surface layers at a given place. Consequently, contours indicating the surface mass balance averaged over the ten years were obtained and delineated on the topographical map of Mizuho Plateau. It was then derived from the contour map that the total mass inputs in the Shirase and the Soya drainage basin are respectively 15.5 and 1.2Gt/yr. Moreover, from the result of discussions of the general role concerning the characteristics of the distribution of the mass balance related to the topography, the emergence/submergence flow of the ice sheet and the action of katabatic winds, it is suggested that the positive and the negative balance take place on the surface of the ice sheet in such a direction that the unilateral changes due to the perturbation deposition of solid precipitation and the vertical flow of the ice sheet cancel out, resulting in the maintenance of the morphological features of the ice sheet. Report Antarc* Antarctica Ice Sheet Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Plateau ENVELOPE(40.000,40.000,-73.000,-73.000) |
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Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
Mizuho Plateau is classified into an ablation zone and three different accumulation zones from the regional distribution of thickness of the annual layer accumulated snow measured during ten years beginning in 1968 using the snow stake method, and from the locations of the ablation area provided by images of ERTS satellite. A snow stake along a traverse route gave the thickness of the annual layer at a given place in a given year; the thickness there in another year in which measurements were not made was obtained by extrapolation, using a value of annual variation in areal average in each of the zones; then, the thickness was averaged over the ten years. In addition, stratigraphic data provided thicknesses and the density profile of the surface layers at a given place. Consequently, contours indicating the surface mass balance averaged over the ten years were obtained and delineated on the topographical map of Mizuho Plateau. It was then derived from the contour map that the total mass inputs in the Shirase and the Soya drainage basin are respectively 15.5 and 1.2Gt/yr. Moreover, from the result of discussions of the general role concerning the characteristics of the distribution of the mass balance related to the topography, the emergence/submergence flow of the ice sheet and the action of katabatic winds, it is suggested that the positive and the negative balance take place on the surface of the ice sheet in such a direction that the unilateral changes due to the perturbation deposition of solid precipitation and the vertical flow of the ice sheet cancel out, resulting in the maintenance of the morphological features of the ice sheet. |
format |
Report |
author |
Tomomi Yamada Gorow Wakahama |
spellingShingle |
Tomomi Yamada Gorow Wakahama The Regional Distribution of Surface Mass Balance in Mizuho Plateau, Antarctica |
author_facet |
Tomomi Yamada Gorow Wakahama |
author_sort |
Tomomi Yamada |
title |
The Regional Distribution of Surface Mass Balance in Mizuho Plateau, Antarctica |
title_short |
The Regional Distribution of Surface Mass Balance in Mizuho Plateau, Antarctica |
title_full |
The Regional Distribution of Surface Mass Balance in Mizuho Plateau, Antarctica |
title_fullStr |
The Regional Distribution of Surface Mass Balance in Mizuho Plateau, Antarctica |
title_full_unstemmed |
The Regional Distribution of Surface Mass Balance in Mizuho Plateau, Antarctica |
title_sort |
regional distribution of surface mass balance in mizuho plateau, antarctica |
publisher |
The Institute of Low Temperature Science, Hokkaido University |
publishDate |
1981 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1191 http://id.nii.ac.jp/1291/00001191/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1191&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(40.000,40.000,-73.000,-73.000) |
geographic |
Mizuho Mizuho Plateau |
geographic_facet |
Mizuho Mizuho Plateau |
genre |
Antarc* Antarctica Ice Sheet Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Antarc* Antarctica Ice Sheet Memoirs of National Institute of Polar Research Polar Research |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1191 http://id.nii.ac.jp/1291/00001191/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 19, 307-320(1981-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1191&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766248247131635712 |