Application of first arrival seismic tomography in a glaciated basin: implications for paleo-ice stream development
Application of first arrival seismic tomography in a glaciated basin: implications for paleo-ice stream development
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初至地震层析成像在冰川盆地中的应用:对古冰流发育的影响
DOI:
10.1017/jog.2022.72
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发表时间:
2023
影响因子:
3.4
通讯作者:
Moucha, Robert
中科院分区:
文献类型:
--
作者:
Zaremba, Nicholas J.;Scholz, Christopher A.;Moucha, Robert
Ice streams are sites of ice-sheet drainage and together with other processes, such as calving, have an impact on deglaciation rates and ice-sheet mass balance. Proglacial lake deposits provide records of ice-sheet deglaciation and have the potential to supplement other paleoclimate records. Oneida Lake, northeastern USA, contains a thick proglacial lake sequence that buries evidence of ice streaming and a paleo-calving margin that developed during retreat of the Laurentide Ice Sheet. Previous high-resolution digital elevation models identified the Oneida Ice Stream from glacial landforms northwest of the lake. In this study, we utilize seismic refractions from a multichannel seismic (MCS) reflection dataset to estimate the thickness of glacial deposits using seismic tomography. With this method we constrain the depth to top of Paleozoic strata, especially in areas where the reflection data yielded poor outcomes and validate our reflection data in regions of good coverage. We demonstrate that where long offset seismic data are available, the first-arrival tomography method is useful in studies of formerly glaciated basins. Our study identifies a ~108 m thick sedimentary section and potentially long paleoclimate record in Oneida Lake, and identifies a paleotopographic low that likely encouraged formation of the Oneida Ice Stream.
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DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
C. Schoof;E. Mantelli
通讯作者:
E. Mantelli
DOI:
10.1029/2020gc009172
发表时间:
2021
期刊:
Geosystems
影响因子:
--
作者:
Huang, Mong‐Han;Hudson‐Rasmussen, Berit;Burdick, Scott;Lekic, Vedran;Nelson, Mariel D.;Fauria, Kristen E.;Schmerr, Nicholas
通讯作者:
Schmerr, Nicholas
DOI:
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发表时间:
1989
期刊:
影响因子:
--
作者:
P. Hanvey
通讯作者:
P. Hanvey
影响因子:
3.4
作者:
R. Thomas
通讯作者:
R. Thomas
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
Ranjana Ghosh;K. Sain
通讯作者:
K. Sain