Instruments and Methods: Radio-Echo Equipment for Depth Sounding of Temperate Glaciers
Abstract Radio echo-sounding equipment has been designed, and used for depth sounding on temperate glaciers in Iceland. Two devices have been built. Mark I operates in the frequency band 2 to 5 MHz. The overall range is 100 to 1000 m. The arrival of the echo can be timed with an accuracy which corre...
Published in: | Journal of Glaciology |
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Language: | English |
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Cambridge University Press (CUP)
1980
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Online Access: | http://dx.doi.org/10.1017/s0022143000015318 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015318 |
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crcambridgeupr:10.1017/s0022143000015318 2024-09-09T19:47:17+00:00 Instruments and Methods: Radio-Echo Equipment for Depth Sounding of Temperate Glaciers Sverrisson, Marteinn Jóhannesson, Ævar Björnsson, Helgi 1980 http://dx.doi.org/10.1017/s0022143000015318 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015318 en eng Cambridge University Press (CUP) Journal of Glaciology volume 25, issue 93, page 477-486 ISSN 0022-1430 1727-5652 journal-article 1980 crcambridgeupr https://doi.org/10.1017/s0022143000015318 2024-07-24T04:03:41Z Abstract Radio echo-sounding equipment has been designed, and used for depth sounding on temperate glaciers in Iceland. Two devices have been built. Mark I operates in the frequency band 2 to 5 MHz. The overall range is 100 to 1000 m. The arrival of the echo can be timed with an accuracy which corresponds to 20 m resolution. The equipment has been used for routine soundings on Mýrdalsjökull and Vatnajökull for the last two years. Mark II operates at 2 to 10 MHz. The range is from 30 to 400 m and the range resolution is 8 m. The equipment has been used for successful soundings on valley glaciers. The power consumption of the whole system is 18 W plus 72 W for the oscilloscope (Tektronix Model 465). The voltage is supplied from 12 V car batteries. The total weight of the equipment is about 35 kg plus the weight of batteries. The antennae are contained in 16 mm plastic tubes. The equipment is placed on two sledges and towed behind a snowmobile or a skidoo. A continuous sounding record is photographed from the oscilloscope. Article in Journal/Newspaper Iceland Journal of Glaciology Mýrdalsjökull Vatnajökull Cambridge University Press Mýrdalsjökull ENVELOPE(-19.174,-19.174,63.643,63.643) Vatnajökull ENVELOPE(-16.823,-16.823,64.420,64.420) Journal of Glaciology 25 93 477 486 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Radio echo-sounding equipment has been designed, and used for depth sounding on temperate glaciers in Iceland. Two devices have been built. Mark I operates in the frequency band 2 to 5 MHz. The overall range is 100 to 1000 m. The arrival of the echo can be timed with an accuracy which corresponds to 20 m resolution. The equipment has been used for routine soundings on Mýrdalsjökull and Vatnajökull for the last two years. Mark II operates at 2 to 10 MHz. The range is from 30 to 400 m and the range resolution is 8 m. The equipment has been used for successful soundings on valley glaciers. The power consumption of the whole system is 18 W plus 72 W for the oscilloscope (Tektronix Model 465). The voltage is supplied from 12 V car batteries. The total weight of the equipment is about 35 kg plus the weight of batteries. The antennae are contained in 16 mm plastic tubes. The equipment is placed on two sledges and towed behind a snowmobile or a skidoo. A continuous sounding record is photographed from the oscilloscope. |
format |
Article in Journal/Newspaper |
author |
Sverrisson, Marteinn Jóhannesson, Ævar Björnsson, Helgi |
spellingShingle |
Sverrisson, Marteinn Jóhannesson, Ævar Björnsson, Helgi Instruments and Methods: Radio-Echo Equipment for Depth Sounding of Temperate Glaciers |
author_facet |
Sverrisson, Marteinn Jóhannesson, Ævar Björnsson, Helgi |
author_sort |
Sverrisson, Marteinn |
title |
Instruments and Methods: Radio-Echo Equipment for Depth Sounding of Temperate Glaciers |
title_short |
Instruments and Methods: Radio-Echo Equipment for Depth Sounding of Temperate Glaciers |
title_full |
Instruments and Methods: Radio-Echo Equipment for Depth Sounding of Temperate Glaciers |
title_fullStr |
Instruments and Methods: Radio-Echo Equipment for Depth Sounding of Temperate Glaciers |
title_full_unstemmed |
Instruments and Methods: Radio-Echo Equipment for Depth Sounding of Temperate Glaciers |
title_sort |
instruments and methods: radio-echo equipment for depth sounding of temperate glaciers |
publisher |
Cambridge University Press (CUP) |
publishDate |
1980 |
url |
http://dx.doi.org/10.1017/s0022143000015318 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015318 |
long_lat |
ENVELOPE(-19.174,-19.174,63.643,63.643) ENVELOPE(-16.823,-16.823,64.420,64.420) |
geographic |
Mýrdalsjökull Vatnajökull |
geographic_facet |
Mýrdalsjökull Vatnajökull |
genre |
Iceland Journal of Glaciology Mýrdalsjökull Vatnajökull |
genre_facet |
Iceland Journal of Glaciology Mýrdalsjökull Vatnajökull |
op_source |
Journal of Glaciology volume 25, issue 93, page 477-486 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000015318 |
container_title |
Journal of Glaciology |
container_volume |
25 |
container_issue |
93 |
container_start_page |
477 |
op_container_end_page |
486 |
_version_ |
1809916752508747776 |