The Regional Distribution of Surface Mass Balance in Mizuho Plateau, Antarctica
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概要
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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.
- 国立極地研究所の論文
著者
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Yamada Tomomi
The Institute Of Low Temperature Science Hokkaido University
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Wakahama Gorow
The Institute Of Low Temperature Science Hokkaido University
関連論文
- GLACIOLOGICAL ASPECTS AND MASS BUDGET OF THE ICE SHEET IN MIZUHO PLATEAU
- Chemical characteristics of basal ice near Hamna Icefall, East Antarctica
- I. NET ACCUMULATION OF SNOW BY STAKE MEASUREMENTS IN SOYA COAST-MIZUHO PLATEAU IN 1971-1973
- Net Accumulation of Snow by Stake Measurements in Soya Coast-Mizuho Plateau in 1971-1973 (Glaciology 2)
- Summer precipitation onto the South Polar Plateau
- VII. SNOW TEMPERATURE AT 10 METERS BELOW THE SURFACE IN MIZUHO PLATEAU IN 1972-1973
- IV. DRIFTING SNOW AT SYOWA STATION AND MIZUHO CAMP IN 1971-1972
- Model studies on the formation of inner moraines in the ablation areas of glaciers
- Snow stratigraphy measured with an active microwave system (abstract)
- Research on the interaction of microwaves with snow and ice. Part I. A study on the microwave backscattering from melting snowpack
- VIII. SURFACE METEOROLOGICAL CONDITION IN MIZUHO PLATEAU IN 1971-1972
- Meteorological Data at Mizuho Camp, Antarctica in 1971-1973
- The Regional Distribution of Surface Mass Balance in Mizuho Plateau, Antarctica
- Meteorological data at Mizuho Camp, Antarctica in 1971-1973(Meteorology 2)
- Snow temperature at 10 meters below the surface at Mizuho Camp in1971-1972(Glaciology 2)
- Drilling snow at Syowa Station and MizuhoCamp in1971-1972(Glaciology 2)
- II. STRATIGRAPHY OF SNOW COVER IN MIZUHO PLATEAU IN 1971-1972
- Anisotropy of Ultrasonic Wave Velocities in Mizuho Cores
- 3. Rising of Water Level in a Drill Hole in Glacier Ice, Soya Coast in 1972 (X. MISCELLANEOUS OBSERVATIONS)
- 2. Thermal Cracks in Snow Cover at Mizuho Camp in 1971 (X. MISCELLANEOUS OBSERVATIONS)
- V. NET RADIATION AT THE SNOW SURFACE AT MIZUHO CAMP IN 1971-1972
- VI. SNOW TEMPERATURE AT MIZUHO CAMP IN 1971-1972
- Net radiation at the snow surface at Mizuho Camp in1971-1972(Glaciology 2)
- Stratigraphic of Snow Cover in Mizuho Plateau in1971-1972(Glaciology 2)