The role of cryogenic processes in the shallow sedimentation in the Laptev Sea

2020 ◽  
pp. 95-102
Author(s):  
A. V. Gavrilov ◽  
E. I. Pizhankova
Keyword(s):  
Sea Ice ◽  
Climate Warming ◽  
Laptev Sea ◽  
Sea Levels ◽  
The Past ◽  
Hydrodynamic Processes ◽  
Rising Sea Levels ◽  
Cryogenic Processes ◽  
The Laptev Sea

The activation of modern sedimentation on the shallows of the Laptev Sea, which underwent exclusively erosion in the past, has been revealed. It occurs against the background of rising sea levels. In this activation, the key role of reducing the area of sea ice, cryogenic and hydrodynamic processes, initiated by climate warming, was established. Sedimentation, accompanied by the formation of islands, is confined to positive uplift morphostructures.

Sea-ice processes in the Laptev Sea and their importance for sediment export

1997 ◽  
Vol 17 (2) ◽  
pp. 205-233 ◽  
Author(s):  
H. Eicken ◽  
E. Reimnitz ◽  
V. Alexandrov ◽  
T. Martin ◽  
H. Kassens ◽  
...  
Keyword(s):  
Sea Ice ◽  
Laptev Sea ◽  
Sediment Export ◽  
The Laptev Sea

scholarly journals Satellite-based sea ice thickness changes in the Laptev Sea from 2002 to 2017: comparison to mooring observations

2020 ◽  
Vol 14 (7) ◽  
pp. 2189-2203
Author(s):  
H. Jakob Belter ◽  
Thomas Krumpen ◽  
Stefan Hendricks ◽  
Jens Hoelemann ◽  
Markus A. Janout ◽  
...  
Keyword(s):  
Sea Ice ◽  
Source Region ◽  
European Space Agency ◽  
The Arctic ◽  
Ice Thickness ◽  
Laptev Sea ◽  
Validation Data ◽  
Data Set ◽  
Sea Ice Thickness ◽  
The Laptev Sea

Abstract. The gridded sea ice thickness (SIT) climate data record (CDR) produced by the European Space Agency (ESA) Sea Ice Climate Change Initiative Phase 2 (CCI-2) is the longest available, Arctic-wide SIT record covering the period from 2002 to 2017. SIT data are based on radar altimetry measurements of sea ice freeboard from the Environmental Satellite (ENVISAT) and CryoSat-2 (CS2). The CCI-2 SIT has previously been validated with in situ observations from drilling, airborne remote sensing, electromagnetic (EM) measurements and upward-looking sonars (ULSs) from multiple ice-covered regions of the Arctic. Here we present the Laptev Sea CCI-2 SIT record from 2002 to 2017 and use newly acquired ULS and upward-looking acoustic Doppler current profiler (ADCP) sea ice draft (VAL) data for validation of the gridded CCI-2 and additional satellite SIT products. The ULS and ADCP time series provide the first long-term satellite SIT validation data set from this important source region of sea ice in the Transpolar Drift. The comparison of VAL sea ice draft data with gridded monthly mean and orbit trajectory CCI-2 data, as well as merged CryoSat-2–SMOS (CS2SMOS) sea ice draft, shows that the agreement between the satellite and VAL draft data strongly depends on the thickness of the sampled ice. Rather than providing mean sea ice draft, the considered satellite products provide modal sea ice draft in the Laptev Sea. Ice drafts thinner than 0.7 m are overestimated, while drafts thicker than approximately 1.3 m are increasingly underestimated by all satellite products investigated for this study. The tendency of the satellite SIT products to better agree with modal sea ice draft and underestimate thicker ice needs to be considered for all past and future investigations into SIT changes in this important region. The performance of the CCI-2 SIT CDR is considered stable over time; however, observed trends in gridded CCI-2 SIT are strongly influenced by the uncertainties of ENVISAT and CS2 and the comparably short investigation period.

Climate Change, Global Justice, and Health Inequities

2019 ◽  
pp. 1-56
Author(s):  
Sharon Friel
Keyword(s):  
Climate Change ◽  
Global Justice ◽  
Social Systems ◽  
Environmental Epidemiology ◽  
Climate Change Impacts ◽  
Health Inequities ◽  
Sea Levels ◽  
Vector Borne Diseases ◽  
Rising Sea Levels

This chapter explains the role of human activities in driving climate change, and some of its most significant impacts. It discusses justice issues raised by climate change, including causal responsibility, future development rights, the distribution of climate change harms, and intergenerational inequity. The chapter also provides a status update on current health inequities, noting the now recognized role of political, economic, commercial, and social factors in determining health. This section also discusses environmental epidemiology and the shift to eco-social approaches and eco-epidemiology, noting that while eco-epidemiologists have begun to research the influence of climate change on health, this research has not yet considered in depth the influence of social systems. The chapter concludes with an overview of how climate change exacerbates existing health inequities, focusing on the health implications of significant climate change impacts, including extreme weather events, rising sea levels, heat stress, vector-borne diseases, and food insecurity.

scholarly journals Near-bottom water warming in the Laptev Sea in response to atmospheric and sea-ice conditions in 2007

2011 ◽  
Vol 30 (1) ◽  
pp. 6425 ◽  
Author(s):  
Jens A. Hölemann ◽  
Sergey Kirillov ◽  
Torben Klagge ◽  
Andrey Novikhin ◽  
Heidemarie Kassens ◽  
...  
Keyword(s):  
Sea Ice ◽  
Bottom Water ◽  
Laptev Sea ◽  
Ice Conditions ◽  
The Laptev Sea

scholarly journals Sea ice circulation in the Laptev Sea and ice export to the Arctic Ocean: Results from satellite remote sensing and numerical modeling

2000 ◽  
Vol 105 (C7) ◽  
pp. 17143-17159 ◽  
Author(s):  
Vitaly Y. Alexandrov ◽  
Thomas Martin ◽  
Josef Kolatschek ◽  
Hajo Eicken ◽  
Martin Kreyscher ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Numerical Modeling ◽  
Sea Ice ◽  
Arctic Ocean ◽  
Satellite Remote Sensing ◽  
The Arctic ◽  
Laptev Sea ◽  
The Arctic Ocean ◽  
The Laptev Sea

scholarly journals Validating satellite derived and modelled sea-ice drift in the Laptev Sea with in situ measurements from the winter of 2007/2008

2011 ◽  
Vol 30 (1) ◽  
pp. 7218 ◽  
Author(s):  
Polona Rozman ◽  
Jens A. Hölemann ◽  
Thomas Krumpen ◽  
Rüdiger Gerdes ◽  
Cornelia Köberle ◽  
...  
Keyword(s):  
Sea Ice ◽  
In Situ Measurements ◽  
Laptev Sea ◽  
Ice Drift ◽  
Sea Ice Drift ◽  
The Laptev Sea
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