Martin Jakobsson
Dados Biográficos
| ID | 3607222 |
|---|---|
| NOME | Martin Jakobsson |
| PRENOMES | Martin |
| SOBRENOME | Jakobsson |
| ASSINATURA | JAKOBSSON M |
| AFILIAÇÕES | Stockholm University |
| ORCID | 0000-0002-9033-3559 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 14 |
| TOTAL DE CITAÇÕES | 0 |
| TOTAL COMO AUTOR | 14 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2004 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2021 |
| ÍNDICE H | 0 |
The Long Timeline of the Ice
Ice ages constitute a significant part of Earth’s climate history with the first signs of widespread ice sheets occurring at about 2.4 billion years ago. In 2004, a nearly 450 metres thick accumulation of seafloor sediments on the submarine Lomonosov Ridge in central Arctic Ocean was drilled by the international Arctic Coring Expedition (ACEX). This geological archive has provided insights into the long-term history of the Arctic Ocean back to 56…
Subsea permafrost carbon stocks and climate change sensitivity estimated by expert assessment
The continental shelves of the Arctic Ocean and surrounding seas contain large stocks of organic matter (OM) and methane (CH 4 ), representing a potential ecosystem feedback to climate change not included in international climate agreements. We performed a structured expert assessment with 25 permafrost researchers to combine quantitative estimates of the stocks and sensitivity of organic carbon in the subsea permafrost domain (i.e. unglaciated p…
Deciphering ∼45.000 years of Arctic Ocean lithostratigraphic variability through multivariate statistical analysis
Seal Occurrence and Habitat Use during Summer in Petermann Fjord, Northwestern Greenland
Ice-associated seals are considered especially susceptible and are potentially the first to modify distribution and habitat use in response to physical changes associated with the changing climate. Petermann Glacier, part of a unique ice-tongue fjord environment in a rarely studied region of northwestern Greenland, lost substantial sections of its ice tongue during major 2010 and 2012 calving events. As a result, changes in seal habitat may have …
New constraints on Arctic Ocean Mn stratigraphy from radiocarbon dating on planktonic foraminifera
Oceanographic influences on the stability of the Cosgrove Ice Shelf, Antarctica
Ferrero Bay, located in eastern Pine Island Bay (PIB) of the Amundsen Sea Embayment, is one of the largest and southernmost fjords yet studied in Antarctica. High-resolution multibeam swath bathymetric data, chirp sonar sub-bottom profiles, and three Kasten cores were collected in Ferrero Bay during the IB Oden Southern Ocean 2009–2010 cruise (OSO0910). Core KC-15 from the inner bay yielded two carbonate ages providing a minimum age for ice sheet…
Arctic Ocean Bathymetry
Most ocean science relies on a geospatial infrastructure that is built from bathymetry data collected from ships underway, archived, and converted into maps and digital grids. Bathymetry, the depth of the seafloor, besides having vital importance to geology and navigation, is a fundamental element in studies of deep water circulation, tides, tsunami forecasting, upwelling, fishing resources, wave action, sediment transport, environmental change, …
The Arctic Observing Summit 2013
The Arctic Observing Summit (AOS) was initiated in 2013 as a high-level international forum to provide community-driven, science-based guidance for the design and implementation of a sustained, comprehensive, and integrated Arctic observing system. The biennial summits target scientists, managers, stakeholders, agencies, Arctic community members, and the private sector across all levels, from local to international. The AOS is a Sustaining Arctic…
The Use of Bathymetric Data in Society and Science
Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge
Stratigraphic constraints on late Pleistocene glacial erosion and deglaciation of the Chukchi margin, Arctic Ocean
At least two episodes of glacial erosion of the Chukchi margin at water depths to ∼ 450 m and 750 m have been indicated by geophysical seafloor data. We examine sediment stratigraphy in these areas to verify the inferred erosion and to understand its nature and timing. Our data within the eroded areas show the presence of glaciogenic diamictons composed mostly of reworked local bedrock. The diamictons are estimated to form during the last glacial…
Postglacial palaeoceanography in the Skagerrak
Crucial periods of change in the latest glacial to early-Holocene palaeogeographic and palaeoceanographic evolution in the Skagerrak region are portrayed in four time-slice maps on a calibrated age scale at 14.0 kyr, 11.2 kyr, 10.2 kyr and 8.1 kyr. The course of palaeoenvironmental events is set in a high-resolution chronological framework using IMAGES core MD99-2286 and a grid of chirp sonar profiles. These maps visualize the complex, rapid pala…
Multibeam bathymetric and sediment profiler evidence for ice grounding on the Chukchi Borderland, Arctic Ocean
Multibeam bathymetry and 3.5-kHz sub-bottom profiler data collected from the US icebreaker Healy in 2003 provide convincing evidence for grounded ice on the Chukchi Borderland off the northern Alaskan margin, Arctic Ocean. The data show parallel, glacially induced seafloor scours, or grooves, and intervening ridges that reach widths of 1000 m (rim to rim) and as much as 40 m relief. Following previous authors, we refer to these features as “megas…
Late Quaternary ice sheet history of northern Eurasia
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Late Quaternary ice sheet history of northern Eurasia
Multibeam bathymetric and sediment profiler evidence for ice grounding on the Chukchi Borderland, Arctic Ocean
Multibeam bathymetry and 3.5-kHz sub-bottom profiler data collected from the US icebreaker Healy in 2003 provide convincing evidence for grounded ice on the Chukchi Borderland off the northern Alaskan margin, Arctic Ocean. The data show parallel, glacially induced seafloor scours, or grooves, and intervening ridges that reach widths of 1000 m (rim to rim) and as much as 40 m relief. Following previous authors, we refer to these features as “megas…
Postglacial palaeoceanography in the Skagerrak
Crucial periods of change in the latest glacial to early-Holocene palaeogeographic and palaeoceanographic evolution in the Skagerrak region are portrayed in four time-slice maps on a calibrated age scale at 14.0 kyr, 11.2 kyr, 10.2 kyr and 8.1 kyr. The course of palaeoenvironmental events is set in a high-resolution chronological framework using IMAGES core MD99-2286 and a grid of chirp sonar profiles. These maps visualize the complex, rapid pala…
Stratigraphic constraints on late Pleistocene glacial erosion and deglaciation of the Chukchi margin, Arctic Ocean
At least two episodes of glacial erosion of the Chukchi margin at water depths to ∼ 450 m and 750 m have been indicated by geophysical seafloor data. We examine sediment stratigraphy in these areas to verify the inferred erosion and to understand its nature and timing. Our data within the eroded areas show the presence of glaciogenic diamictons composed mostly of reworked local bedrock. The diamictons are estimated to form during the last glacial…
Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge
The Use of Bathymetric Data in Society and Science
Arctic Ocean Bathymetry
Most ocean science relies on a geospatial infrastructure that is built from bathymetry data collected from ships underway, archived, and converted into maps and digital grids. Bathymetry, the depth of the seafloor, besides having vital importance to geology and navigation, is a fundamental element in studies of deep water circulation, tides, tsunami forecasting, upwelling, fishing resources, wave action, sediment transport, environmental change, …
The Arctic Observing Summit 2013
The Arctic Observing Summit (AOS) was initiated in 2013 as a high-level international forum to provide community-driven, science-based guidance for the design and implementation of a sustained, comprehensive, and integrated Arctic observing system. The biennial summits target scientists, managers, stakeholders, agencies, Arctic community members, and the private sector across all levels, from local to international. The AOS is a Sustaining Arctic…
New constraints on Arctic Ocean Mn stratigraphy from radiocarbon dating on planktonic foraminifera
Oceanographic influences on the stability of the Cosgrove Ice Shelf, Antarctica
Ferrero Bay, located in eastern Pine Island Bay (PIB) of the Amundsen Sea Embayment, is one of the largest and southernmost fjords yet studied in Antarctica. High-resolution multibeam swath bathymetric data, chirp sonar sub-bottom profiles, and three Kasten cores were collected in Ferrero Bay during the IB Oden Southern Ocean 2009–2010 cruise (OSO0910). Core KC-15 from the inner bay yielded two carbonate ages providing a minimum age for ice sheet…
Seal Occurrence and Habitat Use during Summer in Petermann Fjord, Northwestern Greenland
Ice-associated seals are considered especially susceptible and are potentially the first to modify distribution and habitat use in response to physical changes associated with the changing climate. Petermann Glacier, part of a unique ice-tongue fjord environment in a rarely studied region of northwestern Greenland, lost substantial sections of its ice tongue during major 2010 and 2012 calving events. As a result, changes in seal habitat may have …
Deciphering ∼45.000 years of Arctic Ocean lithostratigraphic variability through multivariate statistical analysis
Subsea permafrost carbon stocks and climate change sensitivity estimated by expert assessment
The continental shelves of the Arctic Ocean and surrounding seas contain large stocks of organic matter (OM) and methane (CH 4 ), representing a potential ecosystem feedback to climate change not included in international climate agreements. We performed a structured expert assessment with 25 permafrost researchers to combine quantitative estimates of the stocks and sensitivity of organic carbon in the subsea permafrost domain (i.e. unglaciated p…
The Long Timeline of the Ice
Ice ages constitute a significant part of Earth’s climate history with the first signs of widespread ice sheets occurring at about 2.4 billion years ago. In 2004, a nearly 450 metres thick accumulation of seafloor sediments on the submarine Lomonosov Ridge in central Arctic Ocean was drilled by the international Arctic Coring Expedition (ACEX). This geological archive has provided insights into the long-term history of the Arctic Ocean back to 56…
Geology (10 obras) · Oceanography (10 obras) · Methane Hydrates and Related Phenomena (9 obras) · Arctic (8 obras) · Geology and Paleoclimatology Research (8 obras) · Geology (7 obras) · Oceanography (7 obras) · Geography (5 obras) · Glacial period (5 obras) · Sea ice (5 obras)