scholarly journals Heterogeneous timing of freshwater input into Kobbefjord, a low‐Arctic Fjord in Greenland

2021 ◽  
Author(s):  
Jakob Abermann ◽  
Kirsty Langley ◽  
Sille M. Myreng ◽  
Kerstin Rasmussen ◽  
Dorthe Petersen
Keyword(s):  
Freshwater Input ◽  
Arctic Fjord ◽  
Low Arctic

scholarly journals Freshwater input to the Arctic fjord Hornsund (Svalbard)

2019 ◽  
Vol 38 (0) ◽  
Author(s):  
Małgorzata Błaszczyk ◽  
Dariusz Ignatiuk ◽  
Aleksander Uszczyk ◽  
Katarzyna Cielecka-Nowak ◽  
Mariusz Grabiec ◽  
...  
Keyword(s):  
The Arctic ◽  
Freshwater Input ◽  
Arctic Fjord

Evaporation from a Small Lake in the Continental Arctic using Multiple Methods

1996 ◽  
Vol 27 (1-2) ◽  
pp. 1-24 ◽  
Author(s):  
J. J. Gibson ◽  
T.D. Prowse ◽  
T. W. D. Edwards
Keyword(s):  
Bowen Ratio ◽  
Balance Model ◽  
Small Lake ◽  
Uncertainty In Measurement ◽  
Class A ◽  
Highly Sensitive ◽  
Low Arctic ◽  
Lake Evaporation ◽  
Daily Evaporation ◽  
Ratio Energy

Daily evaporation from a small lake in the continental Low Arctic of Canada was examined using three independent experimental methods and a simplified combination model. Mean daily lake evaporation (± variability between methods) was estimated to be 3.2+0.3−0.3 mm d−1 and 2.5+0.6−0.3 mmd−1 over fifty-day periods during two consecutive summers. Based on these results and additional class-A pan data, total thaw-season evaporation estimates of 220 mm to 320 mm were obtained, equivalent to 70% to 100% of annual precipitation. These values are 15 to 70% higher than predicted by standard evaporation maps of Canada. Our results indicate that the Priestley-Taylor model provides a good approximation of the Bowen ratio energy balance model in this setting. As expected, estimates based on mass balance are highly sensitive to uncertainty in measurement of lake inflow and outflow.

Anthropogenic particles in sediment from an Arctic fjord

2021 ◽  
Vol 772 ◽  
pp. 145575
Author(s):  
France Collard ◽  
Katrine Husum ◽  
Gauthier Eppe ◽  
Cédric Malherbe ◽  
Ingeborg G. Hallanger ◽  
...  
Keyword(s):  
Arctic Fjord

scholarly journals Middle Holocene Coastal Environmental and Climate Change on the Southern Coast of Korea

2020 ◽  
Vol 11 (1) ◽  
pp. 230
Author(s):  
Hoil Lee ◽  
Jin-Young Lee ◽  
Seungwon Shin
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Stable Carbon Isotopes ◽  
Asian Summer Monsoon ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Freshwater Input ◽  
Reclaimed Land ◽  
Middle Holocene ◽  
Southwest Coast

We obtained a 15 m drill core from Deukryang Bay on the southwest coast of Korea, which is now an area of reclaimed land used for agriculture. We investigated changes in the depositional environment and hydrological climate responses to sea level changes using sedimentary facies, radiocarbon ages, grain-size analysis, total organic carbon (TOC), total sulfur (TS), and stable carbon isotopes (δ13C). Sediment deposition began at 12,000 cal yr BP and was divided into four stages based on changes from fluvial to intertidal environments related to Holocene marine transgression events. Stage 1 (>10,000 cal yr BP) is represented by fluvial sediments; Stage 2 (10,000–7080 cal yr BP) is represented by the deposition of mud facies in an intertidal zone in response to sea level rise; Stage 3 (7080–3300 cal yr BP) was a period of gradually descending sea level following the Holocene maximum sea level and is characterized by gradual changes in TOC, TS, and C/S ratios compared with the mud facies of Stage 2. Stage 4 (3300 to present) was deposited in a supratidal zone and contains low TS and an abundance of TOC. Based on our TS and C/S ratio results, the south coast of Korea was mainly affected by sea level rise between 7000 and 3000 cal yr BP, during the middle Holocene. At 3000 cal yr BP, sea level began to stabilize or gradually decrease. In addition, changes in δ13C values are clearly observed since ca. 5000 cal yr BP, in particular, large hydrological changes via freshwater input are confirmed in 4000–3000 cal yr BP. We consider these shifts in freshwater input indicators of an increased influence of El Niño and La Niña conditions, related to the weakening of the East Asian Summer Monsoon (EASM) and changes in sea surface temperature (SST) of the Western Pacific Ocean during the middle Holocene climatic optimum (between 7800 and 5000 cal yr BP). The cooling periods of SST in East Asia between 8400 and 6600 cal yr BP reported from the west coast of Korea are related closely to changes in vegetation (as evidenced by δ13C) from 7700 cal yrs BP to the present in the southwest coast of Korea. We interpret the freshwater input events at 4000–3000 cal yr BP to be related to changes in SST in response to the weakening of the EASM on the southwest coast of Korea. However, additional research is needed to study the southward migration effect of the westerly jet related to SST and atmospheric circulation controlling terrestrial climate in the middle Holocene.

Abundance and diversity of diazotrophs in the surface sediments of Kongsfjorden, an Arctic fjord

2021 ◽  
Vol 37 (3) ◽  
Author(s):  
T. Jabir ◽  
P. V. Vipindas ◽  
K. P. Krishnan ◽  
A. A. Mohamed Hatha
Keyword(s):  
Surface Sediments ◽  
Arctic Fjord ◽  
Abundance And Diversity

scholarly journals Terrestrial inputs govern spatial distribution of polychlorinated biphenyls (PCBs) and hexachlorobenzene (HCB) in an Arctic fjord system (Isfjorden, Svalbard)

2021 ◽  
Vol 281 ◽  
pp. 116963
Author(s):  
Sverre Johansen ◽  
Amanda Poste ◽  
Ian Allan ◽  
Anita Evenset ◽  
Pernilla Carlsson
Keyword(s):  
Spatial Distribution ◽  
Polychlorinated Biphenyls ◽  
Fjord System ◽  
Terrestrial Inputs ◽  
Arctic Fjord

scholarly journals Effects of Contemporary Winter Seismic Exploration on Low Arctic Plant Communities and Permafrost

2009 ◽  
Vol 41 (2) ◽  
pp. 228-237 ◽  
Author(s):  
J. Todd Kemper ◽  
S. Ellen Macdonald
Keyword(s):  
Plant Communities ◽  
Seismic Exploration ◽  
Low Arctic

Soil microbial and plant community responses to single large carbon and nitrogen additions in low arctic tundra

2010 ◽  
Vol 334 (1-2) ◽  
pp. 409-421 ◽  
Author(s):  
Carolyn Churchland ◽  
Liesha Mayo-Bruinsma ◽  
Alison Ronson ◽  
Paul Grogan
Keyword(s):  
Plant Community ◽  
Arctic Tundra ◽  
Community Responses ◽  
Carbon And Nitrogen ◽  
Soil Microbial ◽  
Low Arctic ◽  
Nitrogen Additions

scholarly journals Comparison of zooplankton vertical migration in an ice-free and a seasonally ice-covered Arctic fjord: An insight into the influence of sea ice cover on zooplankton behavior

2010 ◽  
Vol 55 (2) ◽  
pp. 831-845 ◽  
Author(s):  
Margaret I. Wallace ◽  
Finlo R. Cottier ◽  
Jørgen Berge ◽  
Geraint A. Tarling ◽  
Colin Griffiths ◽  
...  
Keyword(s):  
Sea Ice ◽  
Vertical Migration ◽  
Ice Cover ◽  
Arctic Fjord ◽  
Insight Into

scholarly journals Record-low Arctic stratospheric ozone in 2020: MLS observations of chemical  processes and comparisons with previous extreme winters

2020 ◽  
Author(s):  
Gloria L Manney ◽  
Nathaniel J Livesey ◽  
Michelle L. Santee ◽  
Lucien Froidevaux ◽  
Alyn Lambert ◽  
...  
Keyword(s):  
Stratospheric Ozone ◽  
Chemical Processes ◽  
Low Arctic
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