Uplifted Beach Ridges in Northern Spitsbergen as Indicators for Glacio-Isostasy and Palaeo-Oceanography

Borg, Keath; Schellmann, Gerhard; Brückner, H.

doi:10.1127/zfg/46/2002/309

Cited by 26 publications

(19 citation statements)

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“…Although sediment transport will certainly impact aggradation-degradation, variations in sediment delivery may also constitute a shorter-range temporal variable, superimposed on allometric or quasi-equilibrium change such as sea-level rise (Bull, 1991). Relict beach ridges have long been the subject of study for sea-level rise reconstruction (Bruckner et al, 2002), mapping paleoshorelines (Fisher, 1967), and coastal management (Quadros et al, 2000), with mapping techniques extended to ground-penetrating radar (e.g., Storms and Kroonenberg, 2007). Accepting that the elevation of the beach berm is relatively constant with respect to sea-level, previous berms stood 1-2 m above their cooccurring sea-level, as they do today.…”

Section: Morphometry and Morphodynamicsmentioning

confidence: 99%

Mapping coastal morphodynamics with geospatial techniques, Cape Henry, Virginia, USA

2012

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Section: Morphometry and Morphodynamicsmentioning

confidence: 99%

Mapping coastal morphodynamics with geospatial techniques, Cape Henry, Virginia, USA

2012

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“…The sea level along the western coast of Svalbard has been stabilized since the mid-Holocene (Landvik et al 1998). A recent investigation of beach ridges in northern Spits bergen suggests that coasts have even faced slow transgression (Bruckner et al 2002). If such a sea-level history is applicable to the Isfjorden area, neither new land nor new near shore pingos would emerge in the near future.…”

Section: Effects Of Ongoing Climatic Changesmentioning

confidence: 99%

Present-Day Periglacial Environments in Central Spitsbergen, Svalbard

Matsuoka¹,

Sawaguchi²,

Yoshikawa³

2004

Geogr. Rev. JPN, Chirigaku Hyoron

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This report overviews observations on periglacial geomorphology in central Spits bergen, which have been undertaken by the Japanese geomorphological groups. Focus is given to permafrost-related processes, including solifluction, thermal contraction cracking and pingo growth. Annual freeze-thaw action dominates the ground, resulting in extensive occurrence of solifluction and shallow landslides on soil slopes. Solifluction shows low surface velocity but large volumetric transport, which respectively reflects infrequent diurnal frost creep and deep movement. The latter partly originates from plug-like flow in the basal active layer, where permafrost temperature is low and muddy sediment is thick. Non-sorted polygons with a wide range of diameters develop on lowlands. In colder inland terrains, large polygons (>7 m) have ice wedges, whereas smaller polygons have only soil wedges or cracks confined to the active layer. Significant ice-wedge cracking occurs during rapid and intensive cooling in midwinter. In warmer coastal terrains, ice wedges are not common even below large polygons, because higher winter temperature can produce only shallow cracks. Open-system pingos occur in valley bottoms and near shores. Some pingos are still growing under a low artesian pressure fed by constant supply of sub-permafrost water. Following lateral river erosion, a new frost mound emerged at a side of a pingo, reaching 3 m high during three years. The observations demonstrate that central Spitsbergen is situated in a High Arctic but relatively warm perma frost environment. The transitional condition between cold and warm permafrost allows diverse periglacial features to coexist within a small area. Even minor climatic change can switch the two thermal regimes, affecting significantly the type and magnitude of periglacial processes.

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“…Another important story can be added to reconstruction of polar landscapes by studying the sedimentology of gravel-dominated storm ridges preserved in many uplifted marine sequences across High Arctic region. In Andrée-land (NW Spitsbergen) Brückner et al (2002) and Brückner & Schellmann (2003) postulated that uplifted beach ridges may help us decipher the glacio-isostatic and palaeoceanographic changes. They based their hypothesis on the assumption that conditions favourable for formation of beach ridges reflects existence of ice-free conditions associated with retreat of glacier systems and openwater summer season with wave and current activity.…”

Section: Stories To Be Rewrittenmentioning

confidence: 99%

Cold shores in warming times - current state and future challenges in High Arctic coastal geomorphological studies

Strzelecki

2011

Quaestiones Geographicae

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Cold shores in warming times - current state and future challenges in High Arctic coastal geomorphological studiesMany of the existing intellectual paradigms regarding the functioning of the polar coastal zone are now out-dated, based on descriptive geomorphology and a limited process-based understanding. Currently, among many components of Arctic landscape adjusting to global warming, the coastal zone is probably the most critical one both in terms of rapidity of environmental change as well as importance for human communities living in circumpolar regions. This issue was often raised during the 4th International Polar Year 2007-2008 and encouraged the scientific community to focus on the state of cold region coasts in more detail. In this paper I summarize the most recent developments in Arctic coastal geomorphology with a particular focus on the Svalbard Archipelago and draw attention to the research challenges awaiting further investigation. This paper highlights the need for a greater understanding of the controls on High Arctic coastal geoecosystems, especially given the potential for accelerated warming and sea-level rise in the coming decades and centuries. Many of presented views benefited from discussions with Professor Andrzej Kostrzewski - to whom this volume is dedicated.

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Uplifted Beach Ridges in Northern Spitsbergen as Indicators for Glacio-Isostasy and Palaeo-Oceanography

Cited by 26 publications

References 0 publications

Mapping coastal morphodynamics with geospatial techniques, Cape Henry, Virginia, USA

Mapping coastal morphodynamics with geospatial techniques, Cape Henry, Virginia, USA

Present-Day Periglacial Environments in Central Spitsbergen, Svalbard

Cold shores in warming times - current state and future challenges in High Arctic coastal geomorphological studies

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