Correlations of suspended sediment size with bedrock lithology and glacier dynamics
The hypothesized link between glacier surging and bedrock geology motivates this study of the suspended sediment size distributions (SSSD) from surge-type and non-surge-type glaciers. We analyze SSSDs from proglacial streams in 20 individual basins comprising various fractions of metasedimentary (MS...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Cambridge University Press
2016-07-01
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| Series: | Annals of Glaciology |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S0260305516000069/type/journal_article |
| _version_ | 1811157272012783616 |
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| author | Jeff W. Crompton Gwenn E. Flowers |
| author_facet | Jeff W. Crompton Gwenn E. Flowers |
| author_sort | Jeff W. Crompton |
| collection | DOAJ |
| description | The hypothesized link between glacier surging and bedrock geology motivates this study of the suspended sediment size distributions (SSSD) from surge-type and non-surge-type glaciers. We analyze SSSDs from proglacial streams in 20 individual basins comprising various fractions of metasedimentary (MS) and felsic plutonic rocks. We compare the size distributions by performing tests of significance on the distribution statistics, and a principal component analysis on discrete grain sizes. We find that surge-type and non-surge-type glaciers underlain solely by MS rocks have significantly different SSSDs, while surge-type glaciers as a whole have remarkably similar SSSDs, regardless of the underlying bedrock geology. These observations hint at a relationship between sediment characteristics and glacier surging, though causation in either direction cannot be established without additional data. |
| first_indexed | 2024-04-10T05:04:28Z |
| format | Article |
| id | doaj.art-20f47f80d4ce43cf9c00c160dafa5857 |
| institution | Directory Open Access Journal |
| issn | 0260-3055 1727-5644 |
| language | English |
| last_indexed | 2024-04-10T05:04:28Z |
| publishDate | 2016-07-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Annals of Glaciology |
| spelling | doaj.art-20f47f80d4ce43cf9c00c160dafa58572023-03-09T12:27:29ZengCambridge University PressAnnals of Glaciology0260-30551727-56442016-07-015714215010.1017/aog.2016.6Correlations of suspended sediment size with bedrock lithology and glacier dynamicsJeff W. Crompton0Gwenn E. Flowers1Department of Earth Sciences, Simon Fraser University, Burnaby, British Columbia, Canada E-mail:Department of Earth Sciences, Simon Fraser University, Burnaby, British Columbia, Canada E-mail:The hypothesized link between glacier surging and bedrock geology motivates this study of the suspended sediment size distributions (SSSD) from surge-type and non-surge-type glaciers. We analyze SSSDs from proglacial streams in 20 individual basins comprising various fractions of metasedimentary (MS) and felsic plutonic rocks. We compare the size distributions by performing tests of significance on the distribution statistics, and a principal component analysis on discrete grain sizes. We find that surge-type and non-surge-type glaciers underlain solely by MS rocks have significantly different SSSDs, while surge-type glaciers as a whole have remarkably similar SSSDs, regardless of the underlying bedrock geology. These observations hint at a relationship between sediment characteristics and glacier surging, though causation in either direction cannot be established without additional data.https://www.cambridge.org/core/product/identifier/S0260305516000069/type/journal_articleglacier surgessubglacial processessubglacial sedimentgrain size distributionSt. Elias Mountains |
| spellingShingle | Jeff W. Crompton Gwenn E. Flowers Correlations of suspended sediment size with bedrock lithology and glacier dynamics Annals of Glaciology glacier surges subglacial processes subglacial sediment grain size distribution St. Elias Mountains |
| title | Correlations of suspended sediment size with bedrock lithology and glacier dynamics |
| title_full | Correlations of suspended sediment size with bedrock lithology and glacier dynamics |
| title_fullStr | Correlations of suspended sediment size with bedrock lithology and glacier dynamics |
| title_full_unstemmed | Correlations of suspended sediment size with bedrock lithology and glacier dynamics |
| title_short | Correlations of suspended sediment size with bedrock lithology and glacier dynamics |
| title_sort | correlations of suspended sediment size with bedrock lithology and glacier dynamics |
| topic | glacier surges subglacial processes subglacial sediment grain size distribution St. Elias Mountains |
| url | https://www.cambridge.org/core/product/identifier/S0260305516000069/type/journal_article |
| work_keys_str_mv | AT jeffwcrompton correlationsofsuspendedsedimentsizewithbedrocklithologyandglacierdynamics AT gwenneflowers correlationsofsuspendedsedimentsizewithbedrocklithologyandglacierdynamics |