Integrated acoustic and coring investigation of glacigenic deposits in Spitsbergen fjords

Plassen, Liv; Vorren, Tore O.; Forwick, Matthias

doi:10.3402/polar.v23i1.6269

Cited by 43 publications

(40 citation statements)

References 33 publications

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“…4). Svalbard glaciers reached their maximum Holocene extent at the end of the Little Ice Age (LIA; c. AD 1900, Majewski et al 2009) and retreated during the 20th century (Plassen et al 2004;Błaszczyk et al 2013). We hypothesize that long-term variations in the deposits in the SOUTH core reflect the influence of shelf processes related to regional oceanographic changes (e.g.…”

Section: Sedimentary Environmentmentioning

confidence: 99%

The influence of Coriolis force driven water circulation on the palaeoenvironment of Hornsund (S Spitsbergen) over the last century

Pawłowska

Zajączkowski

Szczuciński

et al. 2017

Boreas

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Section: Sedimentary Environmentmentioning

confidence: 99%

The influence of Coriolis force driven water circulation on the palaeoenvironment of Hornsund (S Spitsbergen) over the last century

Pawłowska

Zajączkowski

Szczuciński

et al. 2017

Boreas

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“…63.1c) are composed of massive, clayey silt with varying amounts of clasts (Plassen et al 2004). 63.1c) are composed of massive, clayey silt with varying amounts of clasts (Plassen et al 2004).…”

Section: Glacigenic Mtdsmentioning

confidence: 99%

“…Several sediment cores from Billefjorden, Tempelfjorden, Yoldiabukta and Borebukta penetrate the top of glacigenic debris lobes or other sediments that were deposited during or after these maximum Holocene extents (Plassen et al 2004;Baeten 2007;Forwick et al 2010). Several sediment cores from Billefjorden, Tempelfjorden, Yoldiabukta and Borebukta penetrate the top of glacigenic debris lobes or other sediments that were deposited during or after these maximum Holocene extents (Plassen et al 2004;Baeten 2007;Forwick et al 2010).…”

Section: Turbidity-flow Activitymentioning

confidence: 99%

“…We would especially like to thank the co-chiefs, Mike Underwood and Sanny Saito and the Expedition Project Manager, Yusuke Kubo, for their dedication to the success of the expedition and Hajime Naruse for his onboard discussions and suggestions. Sediment lobes were deposited proximal to all tidewater glaciers during the Little Ice Age (Elverhøi et al 1995; Boulton et al 1996;Plassen et al 2004;Ottesen and Dowdeswell 2006;Forwick and Vorren 2011). This research used samples and data provided by the Integrated Ocean Drilling Program (IODP).…”

Section: Acknowledgmentsmentioning

confidence: 99%

“…The relatively large sizes and volumes of glacigenic MTDs, in comparison to fluvial MTDs, as well as various degrees of sorting might be explained in the way that advancing glacier fronts remobilise and mix significant amounts of sediments that are subsequently deposited during a single event and/or as a continuously failing, mobile push moraine during the readvance (e.g., Plassen et al 2004;Kristensen et al 2009). The more continuous supply of sediments to river deltas, on the other hand, lead to more frequent, smaller and better sorted MTDs.…”

Section: Acknowledgmentsmentioning

confidence: 99%

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Submarine Mass Movements and Their Consequences

Yamada¹,

Kawamura²,

Ikehara³

et al. 2012

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Thermal structure of Svalbard glaciers and implications for thermal switch models of glacier surging

et al. 2015

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Switches between cold‐ and warm‐based conditions have long been invoked to explain surges of High Arctic glaciers. Here we compile existing and new data on the thermal regime of six glaciers in Svalbard to test the applicability of thermal switch models. Two of the large glaciers of our sample are water terminating while one is land terminating. All three have a well‐known surge history. They have a thick basal layer of temperate ice, superimposed by cold ice. A cold terminus forms during quiescence but is mechanically removed by calving on tidewater glaciers. The other three glaciers are relatively small and are either entirely cold or have a diminishing warm core. All three bear evidence of former warm‐based thermal regimes and, in two cases, surge‐like behavior during the Little Ice Age. In Svalbard, therefore, three types of glaciers have switched from slow to fast flow: (1) small glaciers that underwent thermal cycles during and following the Little Ice Age (switches between cold‐ and warm‐based conditions), (2) large terrestrial glaciers which remain warm based throughout the entire surge cycle but develop cold termini during quiescence, and (3) large tidewater glaciers that remain warm based throughout the surge cycle. Our results demonstrate that thermal switching cannot explain the surges of large glaciers in Svalbard. We apply the concept of enthalpy cycling to the spectrum of surge and surge‐like behavior displayed by these glaciers and demonstrate that all Svalbard surge‐type glaciers can be understood within a single conceptual framework.

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Integrated acoustic and coring investigation of glacigenic deposits in Spitsbergen fjords

Cited by 43 publications

References 33 publications

The influence of Coriolis force driven water circulation on the palaeoenvironment of Hornsund (S Spitsbergen) over the last century

The influence of Coriolis force driven water circulation on the palaeoenvironment of Hornsund (S Spitsbergen) over the last century

Submarine Mass Movements and Their Consequences

Thermal structure of Svalbard glaciers and implications for thermal switch models of glacier surging

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