Isolation basin stratigraphy and Holocene relative sea-level change on Arveprinsen Ejland, Disko Bugt, West Greenland

Long, Antony J.; Roberts, David H.; Wright, Matthew

doi:10.1002/(sici)1099-1417(199907)14:4<323::aid-jqs442>3.0.co;2-0

Cited by 91 publications

(97 citation statements)

References 36 publications

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“…Fleming and Lambeck (2004) showed previously how the inclusion of a neoglacial ice sheet readvance causes RSL predictions in Disko Bugt to fall below present in the late Holocene and fit RSL observations (Long et al, 1999), but neither their tuned model, nor that of Tarasov and Peltier (2002) include a neoglacial readvance of the Qassimiut Lobe. A more recent modelling study using ICE-5G suggests that a 33 km readvance of the Qassimiut Lobe during the last 3 k yr is needed to explain present-day GPS measurements of land uplift (Khan et al, 2008).…”

Section: Intensity Of Holocene Thermal Maximum Retreatmentioning

confidence: 99%

Using relative sea-level data to constrain the deglacial and Holocene history of southern Greenland

Woodroffe

Long

Lecavalier

et al. 2014

Quaternary Science Reviews

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. (2014) 'Using relative sea-level data to constrain the deglacial and Holocene history of southern Greenland.', Quaternary science reviews., 92 . pp. 345-356. Further information on publisher's website:http://dx.doi.org/10.1016/j.quascirev.2013.09.008Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Quaternary Science Reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be re ected in this document. Changes may have been made to this work since it was submitted for publication. A de nitive version was subsequently published in Quaternary Science Reviews, 92, 2014Reviews, 92, , 10.1016Reviews, 92, /j.quascirev.2013 Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. i2

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Section: Intensity Of Holocene Thermal Maximum Retreatmentioning

confidence: 99%

Using relative sea-level data to constrain the deglacial and Holocene history of southern Greenland

Woodroffe

Long

Lecavalier

et al. 2014

Quaternary Science Reviews

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“…Despite this, the local marine limit from this study (75 m a.s.l.) is in broad agreement with both isolation basin studies in central Disko Bugt [59] and modelling results from the Uummannaq region [57] which place the Holocene marine limit in these areas at * 70m a.s.l. This suggests both areas have experienced a similar magnitude of glacioisostatic uplift and may share a similar post LGM relative sea-level history, but the (a)synchroneity and timing of this potential Holocene uplift and sea-level record remains unexplored.…”

Section: Chronology Of Southern Svartenhuk Halvø Depositsmentioning

confidence: 64%

The glacial history of the southern Svartenhuk Halvø, West Greenland

Lane

Roberts

Cofaigh

et al. 2015

Arktos

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This paper presents a new, detailed geomorphological and sedimentological appraisal of the southern Svartenhuk Halvø, a remote area of West Greenland that has only been subjected to limited geomorphological and sedimentological research. Despite this, it is of importance as several studies have suggested it remained an ice-free enclave during the Last Glacial Maximum. This previous work, based on biostratigraphic and chronological evidence, has provided evidence for the 'Svartenhuk Marine Event', a period of ice free conditions and marine deposition into a higher than present relative sea-level during the previous interglacial (MIS 5a-e). This has been correlated to other interglacial deposits in West Greenland. New geomorphological and sedimentological investigations from this study present compelling arguments for the glaciation of southern Svartenhuk Halvø by valley glaciers and mountain ice caps, questioning the status of this peninsula as an ice-free enclave. Ice directional indicators and clast lithological results suggest ice covering Svartenhuk Halvø was sourced from the higher altitude interior of the peninsula and expanded to the present coastline. In a number of valleys, sedimentological evidence points to at least two glacial advances with subglacial till production through the reworking of glaciomarine sediments, and ice contact and glacier-fed delta deposition during phases of ice retreat. The geomorphological and sedimentological context of the sediments (Gilbert type deltas), coupled with evidence for eskers and kettled/pitted delta surfaces, suggests these features formed under glacial and not interglacial conditions. This is supported by new radiocarbon dates which suggest outlet glacier advance and retreat across the area towards the end of MIS 3 and possibly into the Early Holocene. Svartenhuk Halvø was not overrun by the main Greenland Ice Sheet during the last glacial cycle, but the development of an independent ice cap and local outlet glaciers across this region may have been instrumental in determining the dynamic evolution of the Uummannaq ice stream onset zone during the last glacial cycle.

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“…Arveprinsens Eijland is located in the northeast of Disko Bugt (Figs. 1, 7) and was the site for a RSL study by Long et al [36]. It is an ideal site to examine evidence of iceberg-generated tsunami due to the position of the sampled lakes immediately adjacent to Vaskebugt (Arveprinsens Eijland, Figs.…”

Section: Stratigraphic and Morphological Evidence For Iceberg-generatmentioning

confidence: 99%

“…Several of the lakes sampled in this area may indeed contain evidence for tsunami inwash, evidence that Long et al [36] originally attributed to sediment slumping (e.g. [22]).…”

Section: Stratigraphic and Morphological Evidence For Iceberg-generatmentioning

confidence: 99%

“…In a higher lake that was isolated in the early Holocene (V1, lake sill c. 61 m asl, isolated c. 9000 cal BP), Long et al [36] observed close to the transition between the lower marine silts and sands and the overlying freshwater gyttja a prominent horizon of coarse sand and angular gravel, between 2 and 0.5 cm thick (Fig. 7).…”

Section: Stratigraphic and Morphological Evidence For Iceberg-generatmentioning

confidence: 99%

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Sedimentary evidence for a mid-Holocene iceberg-generated tsunami in a coastal lake, west Greenland

Long

Szczuciński

Lawrence

2015

Arktos

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4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Abstract We report sedimentological evidence for a tsunami from a coastal lake at Innaarsuit, Disko Bugt (west Greenland), which was most likely generated by a rolling iceberg. The tsunami invaded the lake c. 6000 years ago, during a period of time when relative sea level (RSL) was falling quickly because of isostatic rebound. We use the background rate of RSL fall, together with an age model for the sediment sequence, to infer a minimum wave runup during the event of c. 3.3 m. The stratigraphic signature of the event bears similarities to that described from studies of the early-Holocene Storegga slide tsunami in Norwegian coastal basins. Conditions conducive to iceberg tsunami include a supply of icebergs, deep water close to the shore, a depositional setting protected from storms or landslide tsunami, and a coastal configuration that has the potential to amplify the height of tsunami waves as water depths shallow and the waves approach and impact the coast. Future warming of polar regions will lead to increased calving and iceberg production, at a time when human use of polar coasts will also grow. We predict, therefore, that iceberg-generated tsunami will become a growing hazard in polar coastal waters, especially in areas adjacent to large, fast-flowing, marine-terminating ice streams that are close to human populations or infrastructure.

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Isolation basin stratigraphy and Holocene relative sea-level change on Arveprinsen Ejland, Disko Bugt, West Greenland

Cited by 91 publications

References 36 publications

Using relative sea-level data to constrain the deglacial and Holocene history of southern Greenland

Using relative sea-level data to constrain the deglacial and Holocene history of southern Greenland

The glacial history of the southern Svartenhuk Halvø, West Greenland

Sedimentary evidence for a mid-Holocene iceberg-generated tsunami in a coastal lake, west Greenland

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