Long-wavelength optical logging for high-resolution detection of ash layers in glacier ice
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-infrare...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2017-02-01
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| Series: | Journal of Glaciology |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S0022143016001052/type/journal_article |
| _version_ | 1811155864319426560 |
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| author | WING S. CHAN MERLIN L. MAH RYAN C. BAY JOSEPH J. TALGHADER |
| author_facet | WING S. CHAN MERLIN L. MAH RYAN C. BAY JOSEPH J. TALGHADER |
| author_sort | WING S. CHAN |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-10T04:41:48Z |
| format | Article |
| id | doaj.art-6df6b6a1ca6941aa8694441411aa0cf3 |
| institution | Directory Open Access Journal |
| issn | 0022-1430 1727-5652 |
| language | English |
| last_indexed | 2024-04-10T04:41:48Z |
| publishDate | 2017-02-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Journal of Glaciology |
| spelling | doaj.art-6df6b6a1ca6941aa8694441411aa0cf32023-03-09T12:40:19ZengCambridge University PressJournal of Glaciology0022-14301727-56522017-02-0163172110.1017/jog.2016.105Long-wavelength optical logging for high-resolution detection of ash layers in glacier iceWING S. CHAN0MERLIN L. MAH1RYAN C. BAY2JOSEPH J. TALGHADER3Department of Electrical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN, USADepartment of Electrical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN, USAPhysics Department & Space Sciences Lab, University of California, Berkeley, CA, USADepartment of Electrical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN, USAA 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.https://www.cambridge.org/core/product/identifier/S0022143016001052/type/journal_articleAntarcticaashborehole logginginstrumentationoptics |
| spellingShingle | WING S. CHAN MERLIN L. MAH RYAN C. BAY JOSEPH J. TALGHADER Long-wavelength optical logging for high-resolution detection of ash layers in glacier ice Journal of Glaciology Antarctica ash borehole logging instrumentation optics |
| title | 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_short | 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 |
| topic | Antarctica ash borehole logging instrumentation optics |
| url | https://www.cambridge.org/core/product/identifier/S0022143016001052/type/journal_article |
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