Oxygen isotope studies from Iceland to an East Greenland Fjord: behaviour of glacial meltwater plume

Azetsu-Scott, Kumiko; Tan, F. C.

doi:10.1016/s0304-4203(96)00078-3

Cited by 62 publications

(48 citation statements)

References 31 publications

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“…The dominance of meltwater and its role in the formation of a welldefined surface layer generally decreases towards the fjord mouth. This along-fjord gradient is seen in salinity profiles (Cottier et al 2005) and oxygen isotope composition (Azetsu-Scott & Tan 1997) and is reflected in the sediment facies (Ó Cofaigh et al 2001).…”

Section: Stratification and Water Massesmentioning

confidence: 95%

“…In terms of volumes, the meltwater can actually constitute a rather small percentage of the overall fjord water, perhaps ,1% for some Spitsbergen fjords. While sea ice melt also makes a rather minor contribution to the freshwater budget (Azetsu-Scott & Tan 1997;MacLachlan et al 2007;Nilsen et al 2008), some studies have reported that the surface water can itself be capped by a very thin fresh lens, thought to be from ice melt at the time of summer thaw (Rysgaard et al 1999). This lens would be rapidly mixed into the surface layer once sea ice has left the fjord.…”

Section: Stratification and Water Massesmentioning

confidence: 99%

“…see figure 7 in Skogseth et al 2005a). In the case of east-facing Greenland fjords, the intermediate water is generally termed Polar Water and derives from the adjacent East Greenland Current (Azetsu-Scott & Tan 1997;Azetsu-Scott & Syvitski 1999;Ó Cofaigh et al 2001;Straneo et al 2010). In the Svalbard fjords, it is most likely to be water which has derived from Atlantic Water carried north in the Norwegian Atlantic Current and the West Spitsbergen Current (Cottier et al 2005;Skogseth et al 2005a;Nilsen et al 2008).…”

Section: Stratification and Water Massesmentioning

confidence: 99%

“…Given the variety of source waters, attempting to disentangle the structure and history of fjordic hydrography using temperature and salinity alone is very challenging. Oxygen isotope techniques are now widely used as a label for specific components such as glacial melt, Atlantic Water sources and brine released during sea-ice formation (Azetsu-Scott & Tan 1997;Yamamoto et al 2002;MacLachlan et al 2007).…”

Section: Stratification and Water Massesmentioning

confidence: 99%

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Arctic fjords: a review of the oceanographic environment and dominant physical processes

Cottier

Nilsen²,

Skogseth³

et al. 2010

163

168

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Fjords have long been recognized for their value as sites of sediment deposition, recording past climatic conditions. Recently, Arctic fjords have been recognized as the critical gateway through which oceanic waters can impact on the stability of glaciers. Arctic fjords are also used as idealized locations to study ice-influenced physical, biological and geochemical processes. In all cases a clear understanding of the physical oceanographic environment is required to interpret and predict related impacts and linkages. In this review we consider the characteristic elements of Arctic fjords and the important dynamical processes. We show how the intense seasonality of these regions is reflected in the varying stratification of the fjords. In particular, we show that sea ice has a central role in terms of the fjord salinity which ultimately influences the exchange with oceanic waters. When the fjord is ice free, wind forcing from the intense down-fjord katabatic winds gives rise to rapidly changing cross-fjord gradients, upwelling and strong surface circulations. The stratification and dimensions of Arctic fjords mean that they are often classed as 'broad' fjords where rotational effects are important in their circulation. We refer to the link between the physical oceanographic conditions and the related depositional records throughout.

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Section: Stratification and Water Massesmentioning

confidence: 95%

Section: Stratification and Water Massesmentioning

confidence: 99%

Section: Stratification and Water Massesmentioning

confidence: 99%

Section: Stratification and Water Massesmentioning

confidence: 99%

See 2 more Smart Citations

Arctic fjords: a review of the oceanographic environment and dominant physical processes

Cottier

Nilsen²,

Skogseth³

et al. 2010

163

168

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show abstract

“…This meltwater is most likely from the KG fjord region (Fig. 4.1), which is a highly active outlet glacier [Azetsu-Scott and Tan, 1997]. Values of fMw are similar at sections 3 and 2 (Fig.…”

Section: Meteoric Watermentioning

confidence: 91%

The East Greenland Coastal Current : its structure variability, and large-scale impact

Sutherland¹

2008

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Oceanic heat delivery via Kangerdlugssuaq Fjord to the south‐east Greenland ice sheet

et al. 2014

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Acceleration of the Greenland Ice Sheet (GrIS) tidewater outlet glaciers has increased the ice sheet's contribution to global sea level rise over the last two decades. Coincident increases in atmospheric temperatures around Greenland explain some of the increased ice loss, but warm Atlantic-origin water (AW) is increasingly recognized as contributing to the accelerating ice-mass loss, particularly, via the outlet glaciers of south-east (SE) Greenland. However, there remains a lack of understanding of the variability in heat content of the water masses found to the east of Greenland and how this heat is communicated to the outlet glaciers of the GrIS. Here a new analysis is presented of ocean/GrIS interaction in which the oceanic heat flux toward the ice sheet in Kangerdlugssuaq Fjord (0.26 TW) is an order-of-magnitude greater than that reported for the other major outlet glacier of SE Greenland (Helheim). Heat delivered by AW to the calving front of Kangerdlugssuaq is equivalent to 10 m d

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Oxygen isotope studies from Iceland to an East Greenland Fjord: behaviour of glacial meltwater plume

Cited by 62 publications

References 31 publications

Arctic fjords: a review of the oceanographic environment and dominant physical processes

Arctic fjords: a review of the oceanographic environment and dominant physical processes

The East Greenland Coastal Current : its structure variability, and large-scale impact

Oceanic heat delivery via Kangerdlugssuaq Fjord to the south‐east Greenland ice sheet

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