Some observations at Halley Bay in seismology, glaciology and meteorology
1. Seismology Considerable microseismic activity was observed at Halley Bay during the summer season from December to February, particularly during on-shore winds. Examples of microseismic and wind observations are shown to illustrate the nature of the relation between these two observations. The sh...
Published in: | Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences |
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Online Access: | http://dx.doi.org/10.1098/rspa.1960.0100 https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1960.0100 |
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crroyalsociety:10.1098/rspa.1960.0100 2024-06-02T08:08:22+00:00 Some observations at Halley Bay in seismology, glaciology and meteorology 1960 http://dx.doi.org/10.1098/rspa.1960.0100 https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1960.0100 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences volume 256, issue 1285, page 149-197 ISSN 0080-4630 2053-9169 journal-article 1960 crroyalsociety https://doi.org/10.1098/rspa.1960.0100 2024-05-07T14:16:40Z 1. Seismology Considerable microseismic activity was observed at Halley Bay during the summer season from December to February, particularly during on-shore winds. Examples of microseismic and wind observations are shown to illustrate the nature of the relation between these two observations. The short-period three-component Willmore seismograph used on the floating ice-shelf was found to record P earth waves from earthquakes at most epicentral distances but S waves were badly recorded. 2. Glaciology The results of elevation, temperature and accumulation studies on the ice-shelf are presented and discussed. These indicate that the ice-shelf was floating with its flat upper surface maintained at 28.6 m above sea level by the yearly addition of about 1 m of snow with a mean density of 0.36 g cm -3 . The results of daily accumulation studies are examined these show that during winter considerable ablation occurred during 24 h and therefore the net accumulation of longer periods may be due to precipitation greatly in excess of the net accumulation. Geomagnetic survey measurements over a small area around the base showed that the coastal features of the ice-front were defined by geological structure beneath the ice-shelf. 3. Meteorology ( a ) The seasonal features of the behaviour of the atmosphere over Halley Bay up to a height of about 20 km are shown and discussed with special reference to wind and temperature changes. A notable feature is the small annual range of monthly mean air temperatures through the troposphere, where extremes are about 10 °C apart, and the increase in the range of mean air temperatures through the stratosphere culminating, at the top of the ascents, in extremes 59.3 °C apart at the 30 mb surface. ( b ) The variation of total and diffuse solar radiation received at Halley Bay on a horizontal surface is examined for dependence on solar elevation, cloud, and drifting snow. With a solar elevation of between 5 and 35°, total solar radiation is within 5 % of 75 % of the estimated ... Article in Journal/Newspaper Ice Shelf The Royal Society Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences 256 1285 149 197 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
1. Seismology Considerable microseismic activity was observed at Halley Bay during the summer season from December to February, particularly during on-shore winds. Examples of microseismic and wind observations are shown to illustrate the nature of the relation between these two observations. The short-period three-component Willmore seismograph used on the floating ice-shelf was found to record P earth waves from earthquakes at most epicentral distances but S waves were badly recorded. 2. Glaciology The results of elevation, temperature and accumulation studies on the ice-shelf are presented and discussed. These indicate that the ice-shelf was floating with its flat upper surface maintained at 28.6 m above sea level by the yearly addition of about 1 m of snow with a mean density of 0.36 g cm -3 . The results of daily accumulation studies are examined these show that during winter considerable ablation occurred during 24 h and therefore the net accumulation of longer periods may be due to precipitation greatly in excess of the net accumulation. Geomagnetic survey measurements over a small area around the base showed that the coastal features of the ice-front were defined by geological structure beneath the ice-shelf. 3. Meteorology ( a ) The seasonal features of the behaviour of the atmosphere over Halley Bay up to a height of about 20 km are shown and discussed with special reference to wind and temperature changes. A notable feature is the small annual range of monthly mean air temperatures through the troposphere, where extremes are about 10 °C apart, and the increase in the range of mean air temperatures through the stratosphere culminating, at the top of the ascents, in extremes 59.3 °C apart at the 30 mb surface. ( b ) The variation of total and diffuse solar radiation received at Halley Bay on a horizontal surface is examined for dependence on solar elevation, cloud, and drifting snow. With a solar elevation of between 5 and 35°, total solar radiation is within 5 % of 75 % of the estimated ... |
format |
Article in Journal/Newspaper |
title |
Some observations at Halley Bay in seismology, glaciology and meteorology |
spellingShingle |
Some observations at Halley Bay in seismology, glaciology and meteorology |
title_short |
Some observations at Halley Bay in seismology, glaciology and meteorology |
title_full |
Some observations at Halley Bay in seismology, glaciology and meteorology |
title_fullStr |
Some observations at Halley Bay in seismology, glaciology and meteorology |
title_full_unstemmed |
Some observations at Halley Bay in seismology, glaciology and meteorology |
title_sort |
some observations at halley bay in seismology, glaciology and meteorology |
publisher |
The Royal Society |
publishDate |
1960 |
url |
http://dx.doi.org/10.1098/rspa.1960.0100 https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1960.0100 |
genre |
Ice Shelf |
genre_facet |
Ice Shelf |
op_source |
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences volume 256, issue 1285, page 149-197 ISSN 0080-4630 2053-9169 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspa.1960.0100 |
container_title |
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences |
container_volume |
256 |
container_issue |
1285 |
container_start_page |
149 |
op_container_end_page |
197 |
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1800753595677671424 |