Long-wavelength optical logging for high-resolution detection of ash layers in glacier ice
ABSTRACT A new instrument for high-resolution optical logging has been built and tested in Antarctica. Its purpose is to obtain records of volcanic products and other scattering features, such as bubbles and impurities, preserved in polar ice sheets, and it achieves this by using long wavelength nea...
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/jog.2016.105 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016001052 |
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crcambridgeupr:10.1017/jog.2016.105 2024-09-15T17:47:52+00:00 Long-wavelength optical logging for high-resolution detection of ash layers in glacier ice CHAN, WING S. MAH, MERLIN L. BAY, RYAN C. TALGHADER, JOSEPH J. 2016 http://dx.doi.org/10.1017/jog.2016.105 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016001052 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by-nc-sa/4.0/ Journal of Glaciology volume 63, issue 237, page 17-21 ISSN 0022-1430 1727-5652 journal-article 2016 crcambridgeupr https://doi.org/10.1017/jog.2016.105 2024-08-21T04:03:56Z ABSTRACT A new instrument for high-resolution optical logging has been built and tested in Antarctica. Its purpose is to obtain records of volcanic products and other scattering features, such as bubbles and impurities, preserved in polar ice sheets, and it achieves this by using long wavelength near-infrared light that is absorbed by the ice before many scattering events occur. Longer wavelengths ensure that the return signal is composed primarily of a single or few backscattering event(s) that limit its spatial spread. The compact optical logger features no components on its body that draw power, which minimizes its size and weight. A prototype of the logger was built and tested at Siple Dome A borehole, and the results were correlated with prior optical logging profiles and records of volcanic products from collected ice core samples. Article in Journal/Newspaper Antarc* Antarctica ice core Journal of Glaciology Cambridge University Press Journal of Glaciology 63 237 17 21 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
ABSTRACT A new instrument for high-resolution optical logging has been built and tested in Antarctica. Its purpose is to obtain records of volcanic products and other scattering features, such as bubbles and impurities, preserved in polar ice sheets, and it achieves this by using long wavelength near-infrared light that is absorbed by the ice before many scattering events occur. Longer wavelengths ensure that the return signal is composed primarily of a single or few backscattering event(s) that limit its spatial spread. The compact optical logger features no components on its body that draw power, which minimizes its size and weight. A prototype of the logger was built and tested at Siple Dome A borehole, and the results were correlated with prior optical logging profiles and records of volcanic products from collected ice core samples. |
format |
Article in Journal/Newspaper |
author |
CHAN, WING S. MAH, MERLIN L. BAY, RYAN C. TALGHADER, JOSEPH J. |
spellingShingle |
CHAN, WING S. MAH, MERLIN L. BAY, RYAN C. TALGHADER, JOSEPH J. Long-wavelength optical logging for high-resolution detection of ash layers in glacier ice |
author_facet |
CHAN, WING S. MAH, MERLIN L. BAY, RYAN C. TALGHADER, JOSEPH J. |
author_sort |
CHAN, WING S. |
title |
Long-wavelength optical logging for high-resolution detection of ash layers in glacier ice |
title_short |
Long-wavelength optical logging for high-resolution detection of ash layers in glacier ice |
title_full |
Long-wavelength optical logging for high-resolution detection of ash layers in glacier ice |
title_fullStr |
Long-wavelength optical logging for high-resolution detection of ash layers in glacier ice |
title_full_unstemmed |
Long-wavelength optical logging for high-resolution detection of ash layers in glacier ice |
title_sort |
long-wavelength optical logging for high-resolution detection of ash layers in glacier ice |
publisher |
Cambridge University Press (CUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1017/jog.2016.105 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016001052 |
genre |
Antarc* Antarctica ice core Journal of Glaciology |
genre_facet |
Antarc* Antarctica ice core Journal of Glaciology |
op_source |
Journal of Glaciology volume 63, issue 237, page 17-21 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2016.105 |
container_title |
Journal of Glaciology |
container_volume |
63 |
container_issue |
237 |
container_start_page |
17 |
op_container_end_page |
21 |
_version_ |
1810497564359786496 |