The Experts below are selected from a list of 3051 Experts worldwide ranked by ideXlab platform
Ichiro Yasuda - One of the best experts on this subject based on the ideXlab platform.
-
warm and saline water transport to the north pacific Subarctic Region world ocean circulation experiment and Subarctic gyre experiment data analysis
Journal of Geophysical Research, 2001Co-Authors: Hiromichi Ueno, Ichiro YasudaAbstract:A warm and saline water transport to the North Pacific Subarctic Region which could feed the mesothermal (intermediate temperature maximum) water is investigated through the analysis of World Ocean Circulation Experiment and Subarctic Gyre Experiment hydrographic data. The analysis of individual cruise data supports the hypothesis that warm and saline water is transported from the area east of Japan to the Gulf of Alaska and also indicates that the isopycnal mixing is active in the area east of 165°E. The transport route obtained from individual cruise data mostly agrees with that based on climatological data. As a whole, isopycnal potential temperature and potential vorticity are conserved along the transport route using both the climatological and individual data excepting that the potential vorticity at 26.8σθ rapidly increases along streamlines in the Gulf of Alaska when the climatological data are used. This discrepancy might be attributed to the existence of the strong potential vorticity front in the Gulf of Alaska and excessive smoothing in the climatological data.
-
distribution and formation of the mesothermal structure temperature inversions in the north pacific Subarctic Region
Journal of Geophysical Research, 2000Co-Authors: Hiromichi Ueno, Ichiro YasudaAbstract:The distribution and formation of mesothermal structure (temperature inversions) in the North Pacific Subarctic Region are investigated through analysis of climatological hydrographic data. It is suggested that the heat and salt that maintain the mesothermal water and thus the halocline in the density range of 26.7–27.2σθ are transported as a crossgyre flow from the transition domain just east of Japan, where the waters are influenced by the subtropical gyre water mass, to the eastern Subarctic Region. Along the transport route the isopycnal potential temperature and thus salinity are well conserved. In the western Subarctic gyre, the Bering Sea, and the northern Gulf of Alaska, the temperature reaches its minimum at the surface in winter and the areal coverage agrees well with the distribution of the mesothermal structure. In the southeastern part of the zonally distributed mesothermal structure in the area of 170°E–150°W and 45°–50°N, where the winter sea surface temperature is higher than that in the deeper layer, dichothermal water is formed by subsurface intrusion of the low-temperature and low-salinity water that outcropped in the previous winter over the warm and saline water transported from the transition domain.
Michael Haney - One of the best experts on this subject based on the ideXlab platform.
-
accidental cold related injury leading to hospitalization in northern sweden an eight year retrospective analysis
Scandinavian Journal of Trauma Resuscitation and Emergency Medicine, 2014Co-Authors: Helge Brandstrom, Goran Johansson, Gordon G Giesbrecht, Karlaxel Angquist, Michael HaneyAbstract:Background Cold injuries are rare but important causes of hospitalization. We aimed to identify the magnitude of cold injury hospitalization, and assess causes, associated factors and treatment routines in a Subarctic Region.
-
accidental cold related injury leading to hospitalization in northern sweden an eight year retrospective analysis
Scandinavian Journal of Trauma Resuscitation and Emergency Medicine, 2014Co-Authors: Helge Brandstrom, Goran Johansson, Gordon G Giesbrecht, Karlaxel Angquist, Michael HaneyAbstract:Cold injuries are rare but important causes of hospitalization. We aimed to identify the magnitude of cold injury hospitalization, and assess causes, associated factors and treatment routines in a Subarctic Region. In this retrospective analysis of hospital records from the 4 northernmost counties in Sweden, cases from 2000-2007 were identified from the hospital registry by diagnosis codes for accidental hypothermia, frostbite, and cold-water drowning. Results were analyzed for pre-hospital site events, clinical events in-hospital, and complications observed with mild (temperature 34.9 - 32°C), moderate (31.9 - 28°C) and severe (<28°C), hypothermia as well as for frostbite and cold-water drowning. From the 362 cases, average annual incidences for hypothermia, frostbite, and cold-water drowning were estimated to be 3.4/100 000, 1.5/100 000, and 0.8/100 000 inhabitants, respectively. Annual frequencies for hypothermia hospitalizations increased by approximately 3 cases/year during the study period. Twenty percent of the hypothermia cases were mild, 40% moderate, and 24% severe. For 12%, the lowest documented core temperature was 35°C or higher, for 4% there was no temperature documented. Body core temperature was seldom measured in pre-hospital locations. Of 362 cold injury admissions, 17 (5%) died in hospital related to their injuries. Associated co-factors and co-morbidities included ethanol consumption, dementia, and psychiatric diagnosis. The incidence of accidental hypothermia seems to be increasing in this studied sub-arctic Region. Likely associated factors are recognized (ethanol intake, dementia, and psychiatric diagnosis).
Hiromichi Ueno - One of the best experts on this subject based on the ideXlab platform.
-
warm and saline water transport to the north pacific Subarctic Region world ocean circulation experiment and Subarctic gyre experiment data analysis
Journal of Geophysical Research, 2001Co-Authors: Hiromichi Ueno, Ichiro YasudaAbstract:A warm and saline water transport to the North Pacific Subarctic Region which could feed the mesothermal (intermediate temperature maximum) water is investigated through the analysis of World Ocean Circulation Experiment and Subarctic Gyre Experiment hydrographic data. The analysis of individual cruise data supports the hypothesis that warm and saline water is transported from the area east of Japan to the Gulf of Alaska and also indicates that the isopycnal mixing is active in the area east of 165°E. The transport route obtained from individual cruise data mostly agrees with that based on climatological data. As a whole, isopycnal potential temperature and potential vorticity are conserved along the transport route using both the climatological and individual data excepting that the potential vorticity at 26.8σθ rapidly increases along streamlines in the Gulf of Alaska when the climatological data are used. This discrepancy might be attributed to the existence of the strong potential vorticity front in the Gulf of Alaska and excessive smoothing in the climatological data.
-
distribution and formation of the mesothermal structure temperature inversions in the north pacific Subarctic Region
Journal of Geophysical Research, 2000Co-Authors: Hiromichi Ueno, Ichiro YasudaAbstract:The distribution and formation of mesothermal structure (temperature inversions) in the North Pacific Subarctic Region are investigated through analysis of climatological hydrographic data. It is suggested that the heat and salt that maintain the mesothermal water and thus the halocline in the density range of 26.7–27.2σθ are transported as a crossgyre flow from the transition domain just east of Japan, where the waters are influenced by the subtropical gyre water mass, to the eastern Subarctic Region. Along the transport route the isopycnal potential temperature and thus salinity are well conserved. In the western Subarctic gyre, the Bering Sea, and the northern Gulf of Alaska, the temperature reaches its minimum at the surface in winter and the areal coverage agrees well with the distribution of the mesothermal structure. In the southeastern part of the zonally distributed mesothermal structure in the area of 170°E–150°W and 45°–50°N, where the winter sea surface temperature is higher than that in the deeper layer, dichothermal water is formed by subsurface intrusion of the low-temperature and low-salinity water that outcropped in the previous winter over the warm and saline water transported from the transition domain.
Helge Brandstrom - One of the best experts on this subject based on the ideXlab platform.
-
accidental cold related injury leading to hospitalization in northern sweden an eight year retrospective analysis
Scandinavian Journal of Trauma Resuscitation and Emergency Medicine, 2014Co-Authors: Helge Brandstrom, Goran Johansson, Gordon G Giesbrecht, Karlaxel Angquist, Michael HaneyAbstract:Background Cold injuries are rare but important causes of hospitalization. We aimed to identify the magnitude of cold injury hospitalization, and assess causes, associated factors and treatment routines in a Subarctic Region.
-
accidental cold related injury leading to hospitalization in northern sweden an eight year retrospective analysis
Scandinavian Journal of Trauma Resuscitation and Emergency Medicine, 2014Co-Authors: Helge Brandstrom, Goran Johansson, Gordon G Giesbrecht, Karlaxel Angquist, Michael HaneyAbstract:Cold injuries are rare but important causes of hospitalization. We aimed to identify the magnitude of cold injury hospitalization, and assess causes, associated factors and treatment routines in a Subarctic Region. In this retrospective analysis of hospital records from the 4 northernmost counties in Sweden, cases from 2000-2007 were identified from the hospital registry by diagnosis codes for accidental hypothermia, frostbite, and cold-water drowning. Results were analyzed for pre-hospital site events, clinical events in-hospital, and complications observed with mild (temperature 34.9 - 32°C), moderate (31.9 - 28°C) and severe (<28°C), hypothermia as well as for frostbite and cold-water drowning. From the 362 cases, average annual incidences for hypothermia, frostbite, and cold-water drowning were estimated to be 3.4/100 000, 1.5/100 000, and 0.8/100 000 inhabitants, respectively. Annual frequencies for hypothermia hospitalizations increased by approximately 3 cases/year during the study period. Twenty percent of the hypothermia cases were mild, 40% moderate, and 24% severe. For 12%, the lowest documented core temperature was 35°C or higher, for 4% there was no temperature documented. Body core temperature was seldom measured in pre-hospital locations. Of 362 cold injury admissions, 17 (5%) died in hospital related to their injuries. Associated co-factors and co-morbidities included ethanol consumption, dementia, and psychiatric diagnosis. The incidence of accidental hypothermia seems to be increasing in this studied sub-arctic Region. Likely associated factors are recognized (ethanol intake, dementia, and psychiatric diagnosis).
Eitarou Oka - One of the best experts on this subject based on the ideXlab platform.
-
quasi stationary jets transporting surface warm waters across the transition zone between the subtropical and the Subarctic gyres in the north pacific
Journal of Geophysical Research, 2006Co-Authors: Osamu Isoguchi, Hiroshi Kawamura, Eitarou OkaAbstract:[1] Surface flow jets and associated sea surface temperature (SST) distribution are investigated in the northwestern North Pacific, using satellite-derived surface currents and SST data that can resolve fine spatial scale structure. The combined use of these data reveals warm tongue phenomena driven by surface geostrophic jets, which extend northeastward in the Kuroshio-Oyashio transition area. They roughly coincide with the Subarctic Front (SAF) defined as the 4°C isotherm at 100 m depth. The phenomena appear throughout the year with seasonal cycles, which do not correspond with that of the Subarctic North Pacific. Their positions are affected by bottom topography so that their quasi-stationary and consistent features are suggested. Thus it is implied that these jets play an important role in transporting warm waters toward the Subarctic Region. The time series of SST and current fields describe the jets' year-to-year variability involving some changes in strength and connections with the Kuroshio Extension (KE), and demonstrate the effects of advection by the jets on SST fields. When KE extends northward at its crests for 1999–2002, one of the jets along SAF simultaneously strengthens, resulting in high SST Region directly over and along the south side of the jet. Hydrographic data show warm, saline water intrusions along the jets. Their mean fields also reveal that these jets are vertically well-developed, forming a boundary between the subtropical and Subarctic gyres in the North Pacific.
