Subglacial discharge at tidewater glaciers revealed by seismic tremor
Subglacial discharge influences glacier basal motion and erodes and redeposits sediment. At tidewater glacier termini, discharge drives submarine terminus melting, affects fjord circulation, and is a central component of proglacial marine ecosystems. However, our present inability to track subglacia...
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| Autor*in: |
West, Michael E [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Rechteinformationen: |
Nutzungsrecht: © 2015. The Authors. |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Geophysical research letters - Washington, DC : Union, 1974, 42(2015), 15, Seite 6391-6398 |
|---|---|
| Übergeordnetes Werk: |
volume:42 ; year:2015 ; number:15 ; pages:6391-6398 |
| Links: |
|---|
| DOI / URN: |
10.1002/2015GL064590 |
|---|
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| 520 | |a Subglacial discharge influences glacier basal motion and erodes and redeposits sediment. At tidewater glacier termini, discharge drives submarine terminus melting, affects fjord circulation, and is a central component of proglacial marine ecosystems. However, our present inability to track subglacial discharge and its variability significantly hinders our understanding of these processes. Here we report observations of hourly to seasonal variations in 1.5–10 Hz seismic tremor that strongly correlate with subglacial discharge but not with basal motion, weather, or discrete icequakes. Our data demonstrate that vigorous discharge occurs from tidewater glaciers during summer, in spite of fast basal motion that could limit the formation of subglacial conduits, and then abates during winter. Furthermore, tremor observations and a melt model demonstrate that drainage efficiency of tidewater glaciers evolves seasonally. Glaciohydraulic tremor provides a means by which to quantify subglacial discharge variations and offers a promising window into otherwise obscured glacierized environments. Subglacial discharge produces seismic tremor Tremor allows for the first view of tidewater glacier discharge variations Despite fast flow, drainage efficiency of tidewater glaciers evolves seasonally | ||
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| 650 | 4 | |a subglacial discharge | |
| 650 | 4 | |a submarine melt | |
| 650 | 4 | |a glacier hydrology | |
| 650 | 4 | |a seismic tremor | |
| 650 | 4 | |a ice/ocean interactions | |
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| 700 | 1 | |a Walter, Jacob I |4 oth | |
| 700 | 1 | |a Bartholomaus, Timothy C |4 oth | |
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10.1002/2015GL064590 doi PQ20160211 (DE-627)OLC196932516X (DE-599)GBVOLC196932516X (PRQ)p1832-52f0fe6ad102eb9b2439cf1970ecef15e424a8047b8320585109f312c6dcc53a0 (KEY)0026932820150000042001506391subglacialdischargeattidewaterglaciersrevealedbyse DE-627 ger DE-627 rakwb eng 550 DNB 38.70 bkl West, Michael E verfasserin aut Subglacial discharge at tidewater glaciers revealed by seismic tremor 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Subglacial discharge influences glacier basal motion and erodes and redeposits sediment. At tidewater glacier termini, discharge drives submarine terminus melting, affects fjord circulation, and is a central component of proglacial marine ecosystems. However, our present inability to track subglacial discharge and its variability significantly hinders our understanding of these processes. Here we report observations of hourly to seasonal variations in 1.5–10 Hz seismic tremor that strongly correlate with subglacial discharge but not with basal motion, weather, or discrete icequakes. Our data demonstrate that vigorous discharge occurs from tidewater glaciers during summer, in spite of fast basal motion that could limit the formation of subglacial conduits, and then abates during winter. Furthermore, tremor observations and a melt model demonstrate that drainage efficiency of tidewater glaciers evolves seasonally. Glaciohydraulic tremor provides a means by which to quantify subglacial discharge variations and offers a promising window into otherwise obscured glacierized environments. Subglacial discharge produces seismic tremor Tremor allows for the first view of tidewater glacier discharge variations Despite fast flow, drainage efficiency of tidewater glaciers evolves seasonally Nutzungsrecht: © 2015. The Authors. subglacial discharge submarine melt glacier hydrology seismic tremor ice/ocean interactions Kayaking Hiking Glaciers Larsen, Christopher F oth Amundson, Jason M oth O'Neel, Shad oth Walter, Jacob I oth Bartholomaus, Timothy C oth Enthalten in Geophysical research letters Washington, DC : Union, 1974 42(2015), 15, Seite 6391-6398 (DE-627)129095109 (DE-600)7403-2 (DE-576)01443122X 0094-8276 nnns volume:42 year:2015 number:15 pages:6391-6398 http://dx.doi.org/10.1002/2015GL064590 Volltext http://onlinelibrary.wiley.com/doi/10.1002/2015GL064590/abstract http://search.proquest.com/docview/1707402105 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_47 GBV_ILN_62 GBV_ILN_154 GBV_ILN_601 GBV_ILN_2279 38.70 AVZ AR 42 2015 15 6391-6398 |
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10.1002/2015GL064590 doi PQ20160211 (DE-627)OLC196932516X (DE-599)GBVOLC196932516X (PRQ)p1832-52f0fe6ad102eb9b2439cf1970ecef15e424a8047b8320585109f312c6dcc53a0 (KEY)0026932820150000042001506391subglacialdischargeattidewaterglaciersrevealedbyse DE-627 ger DE-627 rakwb eng 550 DNB 38.70 bkl West, Michael E verfasserin aut Subglacial discharge at tidewater glaciers revealed by seismic tremor 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Subglacial discharge influences glacier basal motion and erodes and redeposits sediment. At tidewater glacier termini, discharge drives submarine terminus melting, affects fjord circulation, and is a central component of proglacial marine ecosystems. However, our present inability to track subglacial discharge and its variability significantly hinders our understanding of these processes. Here we report observations of hourly to seasonal variations in 1.5–10 Hz seismic tremor that strongly correlate with subglacial discharge but not with basal motion, weather, or discrete icequakes. Our data demonstrate that vigorous discharge occurs from tidewater glaciers during summer, in spite of fast basal motion that could limit the formation of subglacial conduits, and then abates during winter. Furthermore, tremor observations and a melt model demonstrate that drainage efficiency of tidewater glaciers evolves seasonally. Glaciohydraulic tremor provides a means by which to quantify subglacial discharge variations and offers a promising window into otherwise obscured glacierized environments. Subglacial discharge produces seismic tremor Tremor allows for the first view of tidewater glacier discharge variations Despite fast flow, drainage efficiency of tidewater glaciers evolves seasonally Nutzungsrecht: © 2015. The Authors. subglacial discharge submarine melt glacier hydrology seismic tremor ice/ocean interactions Kayaking Hiking Glaciers Larsen, Christopher F oth Amundson, Jason M oth O'Neel, Shad oth Walter, Jacob I oth Bartholomaus, Timothy C oth Enthalten in Geophysical research letters Washington, DC : Union, 1974 42(2015), 15, Seite 6391-6398 (DE-627)129095109 (DE-600)7403-2 (DE-576)01443122X 0094-8276 nnns volume:42 year:2015 number:15 pages:6391-6398 http://dx.doi.org/10.1002/2015GL064590 Volltext http://onlinelibrary.wiley.com/doi/10.1002/2015GL064590/abstract http://search.proquest.com/docview/1707402105 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_47 GBV_ILN_62 GBV_ILN_154 GBV_ILN_601 GBV_ILN_2279 38.70 AVZ AR 42 2015 15 6391-6398 |
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10.1002/2015GL064590 doi PQ20160211 (DE-627)OLC196932516X (DE-599)GBVOLC196932516X (PRQ)p1832-52f0fe6ad102eb9b2439cf1970ecef15e424a8047b8320585109f312c6dcc53a0 (KEY)0026932820150000042001506391subglacialdischargeattidewaterglaciersrevealedbyse DE-627 ger DE-627 rakwb eng 550 DNB 38.70 bkl West, Michael E verfasserin aut Subglacial discharge at tidewater glaciers revealed by seismic tremor 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Subglacial discharge influences glacier basal motion and erodes and redeposits sediment. At tidewater glacier termini, discharge drives submarine terminus melting, affects fjord circulation, and is a central component of proglacial marine ecosystems. However, our present inability to track subglacial discharge and its variability significantly hinders our understanding of these processes. Here we report observations of hourly to seasonal variations in 1.5–10 Hz seismic tremor that strongly correlate with subglacial discharge but not with basal motion, weather, or discrete icequakes. Our data demonstrate that vigorous discharge occurs from tidewater glaciers during summer, in spite of fast basal motion that could limit the formation of subglacial conduits, and then abates during winter. Furthermore, tremor observations and a melt model demonstrate that drainage efficiency of tidewater glaciers evolves seasonally. Glaciohydraulic tremor provides a means by which to quantify subglacial discharge variations and offers a promising window into otherwise obscured glacierized environments. Subglacial discharge produces seismic tremor Tremor allows for the first view of tidewater glacier discharge variations Despite fast flow, drainage efficiency of tidewater glaciers evolves seasonally Nutzungsrecht: © 2015. The Authors. subglacial discharge submarine melt glacier hydrology seismic tremor ice/ocean interactions Kayaking Hiking Glaciers Larsen, Christopher F oth Amundson, Jason M oth O'Neel, Shad oth Walter, Jacob I oth Bartholomaus, Timothy C oth Enthalten in Geophysical research letters Washington, DC : Union, 1974 42(2015), 15, Seite 6391-6398 (DE-627)129095109 (DE-600)7403-2 (DE-576)01443122X 0094-8276 nnns volume:42 year:2015 number:15 pages:6391-6398 http://dx.doi.org/10.1002/2015GL064590 Volltext http://onlinelibrary.wiley.com/doi/10.1002/2015GL064590/abstract http://search.proquest.com/docview/1707402105 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_47 GBV_ILN_62 GBV_ILN_154 GBV_ILN_601 GBV_ILN_2279 38.70 AVZ AR 42 2015 15 6391-6398 |
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West, Michael E @@aut@@ Larsen, Christopher F @@oth@@ Amundson, Jason M @@oth@@ O'Neel, Shad @@oth@@ Walter, Jacob I @@oth@@ Bartholomaus, Timothy C @@oth@@ |
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subglacial discharge at tidewater glaciers revealed by seismic tremor |
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Subglacial discharge at tidewater glaciers revealed by seismic tremor |
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Subglacial discharge influences glacier basal motion and erodes and redeposits sediment. At tidewater glacier termini, discharge drives submarine terminus melting, affects fjord circulation, and is a central component of proglacial marine ecosystems. However, our present inability to track subglacial discharge and its variability significantly hinders our understanding of these processes. Here we report observations of hourly to seasonal variations in 1.5–10 Hz seismic tremor that strongly correlate with subglacial discharge but not with basal motion, weather, or discrete icequakes. Our data demonstrate that vigorous discharge occurs from tidewater glaciers during summer, in spite of fast basal motion that could limit the formation of subglacial conduits, and then abates during winter. Furthermore, tremor observations and a melt model demonstrate that drainage efficiency of tidewater glaciers evolves seasonally. Glaciohydraulic tremor provides a means by which to quantify subglacial discharge variations and offers a promising window into otherwise obscured glacierized environments. Subglacial discharge produces seismic tremor Tremor allows for the first view of tidewater glacier discharge variations Despite fast flow, drainage efficiency of tidewater glaciers evolves seasonally |
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Subglacial discharge influences glacier basal motion and erodes and redeposits sediment. At tidewater glacier termini, discharge drives submarine terminus melting, affects fjord circulation, and is a central component of proglacial marine ecosystems. However, our present inability to track subglacial discharge and its variability significantly hinders our understanding of these processes. Here we report observations of hourly to seasonal variations in 1.5–10 Hz seismic tremor that strongly correlate with subglacial discharge but not with basal motion, weather, or discrete icequakes. Our data demonstrate that vigorous discharge occurs from tidewater glaciers during summer, in spite of fast basal motion that could limit the formation of subglacial conduits, and then abates during winter. Furthermore, tremor observations and a melt model demonstrate that drainage efficiency of tidewater glaciers evolves seasonally. Glaciohydraulic tremor provides a means by which to quantify subglacial discharge variations and offers a promising window into otherwise obscured glacierized environments. Subglacial discharge produces seismic tremor Tremor allows for the first view of tidewater glacier discharge variations Despite fast flow, drainage efficiency of tidewater glaciers evolves seasonally |
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Subglacial discharge influences glacier basal motion and erodes and redeposits sediment. At tidewater glacier termini, discharge drives submarine terminus melting, affects fjord circulation, and is a central component of proglacial marine ecosystems. However, our present inability to track subglacial discharge and its variability significantly hinders our understanding of these processes. Here we report observations of hourly to seasonal variations in 1.5–10 Hz seismic tremor that strongly correlate with subglacial discharge but not with basal motion, weather, or discrete icequakes. Our data demonstrate that vigorous discharge occurs from tidewater glaciers during summer, in spite of fast basal motion that could limit the formation of subglacial conduits, and then abates during winter. Furthermore, tremor observations and a melt model demonstrate that drainage efficiency of tidewater glaciers evolves seasonally. Glaciohydraulic tremor provides a means by which to quantify subglacial discharge variations and offers a promising window into otherwise obscured glacierized environments. Subglacial discharge produces seismic tremor Tremor allows for the first view of tidewater glacier discharge variations Despite fast flow, drainage efficiency of tidewater glaciers evolves seasonally |
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Subglacial discharge at tidewater glaciers revealed by seismic tremor |
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