Holocene Paleohydrology of the St. Elias Mountains, British Columbia and Yukon
ABSTRACT The evolution of the Holocene paraglacial environment of the St. Elias Mountains has been dominated by hydrological variations which modify the direct glacial depositional environment and trigger instabilities in valley side glacial and talus deposits. Data from the Kaskawulsh Glacier demon...
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| Veröffentlicht in: | Géographie physique et quaternaire 1986, Vol.40 (1), p.47-53 |
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| container_title | Géographie physique et quaternaire |
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| creator | Johnson, Peter G. |
| description | ABSTRACT
The evolution of the Holocene paraglacial environment of the St. Elias Mountains has been dominated by hydrological variations which modify the direct glacial depositional environment and trigger instabilities in valley side glacial and talus deposits. Data from the Kaskawulsh Glacier demonstrate how discharge and sediment transport regimes vary through the season, as sediment is flushed out of the system, and a marginal to subglacial drainage change of the Grizzly Creek Glacier illustrates the effects of extraordinary events in transporting large volumes of sediment. A multiple glacier fluctuation model applied to the region produces rapid temporal changes in discharge and sediment regimes throughout the Holocene. The effect of these variations is enhanced by the occurrence of surges of many of the glaciers of the St. Elias Mountains and by sequences of glacier dammed lake formation and drainage in the region. |
| doi_str_mv | 10.7202/032622ar |
| format | Article |
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The evolution of the Holocene paraglacial environment of the St. Elias Mountains has been dominated by hydrological variations which modify the direct glacial depositional environment and trigger instabilities in valley side glacial and talus deposits. Data from the Kaskawulsh Glacier demonstrate how discharge and sediment transport regimes vary through the season, as sediment is flushed out of the system, and a marginal to subglacial drainage change of the Grizzly Creek Glacier illustrates the effects of extraordinary events in transporting large volumes of sediment. A multiple glacier fluctuation model applied to the region produces rapid temporal changes in discharge and sediment regimes throughout the Holocene. The effect of these variations is enhanced by the occurrence of surges of many of the glaciers of the St. Elias Mountains and by sequences of glacier dammed lake formation and drainage in the region.</description><identifier>ISSN: 0705-7199</identifier><identifier>EISSN: 1492-143X</identifier><identifier>DOI: 10.7202/032622ar</identifier><language>eng</language><publisher>Montréal, PQ: Les Presses de l'Université de Montréal</publisher><subject>America ; Bgi / Prodig ; Canada ; Physical geography</subject><ispartof>Géographie physique et quaternaire, 1986, Vol.40 (1), p.47-53</ispartof><rights>Tous droits réservés © Les Presses de l'Université de Montréal, 1986</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a210r-41adf634724d6b87a7be235d1840d9329af2970dd86ab4cbb65d17c40e0a11b63</citedby><cites>FETCH-LOGICAL-a210r-41adf634724d6b87a7be235d1840d9329af2970dd86ab4cbb65d17c40e0a11b63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.erudit.org/en/journals/gpq/1986-gpq1946/032622ar.pdf$$EPDF$$P50$$Gerudit$$H</linktopdf><linktohtml>$$Uhttp://id.erudit.org/iderudit/032622ar$$EHTML$$P50$$Gerudit$$H</linktohtml><link.rule.ids>314,694,780,784,4024,27869,27923,27924,27925,79561,79562,79569,79576</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=12063852$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Johnson, Peter G.</creatorcontrib><title>Holocene Paleohydrology of the St. Elias Mountains, British Columbia and Yukon</title><title>Géographie physique et quaternaire</title><description>ABSTRACT
The evolution of the Holocene paraglacial environment of the St. Elias Mountains has been dominated by hydrological variations which modify the direct glacial depositional environment and trigger instabilities in valley side glacial and talus deposits. Data from the Kaskawulsh Glacier demonstrate how discharge and sediment transport regimes vary through the season, as sediment is flushed out of the system, and a marginal to subglacial drainage change of the Grizzly Creek Glacier illustrates the effects of extraordinary events in transporting large volumes of sediment. A multiple glacier fluctuation model applied to the region produces rapid temporal changes in discharge and sediment regimes throughout the Holocene. 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The evolution of the Holocene paraglacial environment of the St. Elias Mountains has been dominated by hydrological variations which modify the direct glacial depositional environment and trigger instabilities in valley side glacial and talus deposits. Data from the Kaskawulsh Glacier demonstrate how discharge and sediment transport regimes vary through the season, as sediment is flushed out of the system, and a marginal to subglacial drainage change of the Grizzly Creek Glacier illustrates the effects of extraordinary events in transporting large volumes of sediment. A multiple glacier fluctuation model applied to the region produces rapid temporal changes in discharge and sediment regimes throughout the Holocene. The effect of these variations is enhanced by the occurrence of surges of many of the glaciers of the St. Elias Mountains and by sequences of glacier dammed lake formation and drainage in the region.</abstract><cop>Montréal, PQ</cop><pub>Les Presses de l'Université de Montréal</pub><doi>10.7202/032622ar</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0705-7199 |
| ispartof | Géographie physique et quaternaire, 1986, Vol.40 (1), p.47-53 |
| issn | 0705-7199 1492-143X |
| language | eng |
| recordid | cdi_proquest_journals_1308838868 |
| source | Érudit (Freely Accessible); REPÈRE - Free; Periodicals Index Online; Érudit; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | America Bgi / Prodig Canada Physical geography |
| title | Holocene Paleohydrology of the St. Elias Mountains, British Columbia and Yukon |
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