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Nathalie Sennéchael - One of the best experts on this subject based on the ideXlab platform.
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fronts Meanders and eddies in drake passage during the ant xxiii 3 cruise in january february 2006 a satellite perspective
Deep-sea Research Part Ii-topical Studies in Oceanography, 2011Co-Authors: Nicolas Barré, Christine Provost, Alice Renault, Nathalie SennéchaelAbstract:Abstract We used satellite altimetric data to provide a context for the results of the ANT-XXIII/3 cruise in January–February 2006 both in time (16 years) and space (the whole of Drake Passage). The repeat of the hydrographical section within 3 weeks permitted different comparisons between the in-situ datasets and the satellite data products. Comparisons suggested that the multi-satellite product improved the temporal resolution on a Jason-1 track. A detailed analysis of the four absolute dynamic topography maps contemporaneous with the ANT-XXIII/3 cruise permitted identification of the location of the frontal branches of the Antarctic Circumpolar Current, of the major Meanders and eddies. This spatial context proved particularly valuable for the interpretation of the in-situ data (see companion papers of Provost et al., 2011 ; Renault et al., 2011 ; Sudre et al., 2011 ). The altimetric time-series documented the long-term trends in sea-surface height, the recurrence of major frontal Meanders and eddies and the statistical links between them. Negative trends in the Yaghan Basin indicated that both the Subantarctic Front and the Polar Front have shifted to the north of their climatological location. This northward shift in the Yaghan Basin contrasts with the large-scale southward shift in the Polar Front current core described in the literature, and is probably related to the local bottom topography in Drake Passage. Sea-level anomaly patterns observed during the cruise were related to statistical modes of the corresponding variations in Drake Passage. For example, the southward meander of the Subantarctic Front at the entrance to Drake Passage was part of a dipole comprising an adjacent Polar Front meander and occurred with a close to annual periodicity. A census of eddies in the Ona Basin revealed that the spatial distribution of anticyclonic eddies was consistent with generation from a meander of the Polar and Southern ACC Fronts over the Ona Seafloor Depression, while cyclonic eddies mostly originated from Meanders of southern fronts associated with two rises on the continental slope: the Ona Rise and the Terror Rise.
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Fronts, Meanders and eddies in Drake Passage during the ANT-XXIII/3 cruise in January-February 2006: A satellite perspective
Deep Sea Research Part II: Topical Studies in Oceanography, 2011Co-Authors: Nicolas Barré, Christine Provost, Alice Renault, Nathalie SennéchaelAbstract:We used satellite altimetric data to provide a context for the results of the ANT-XXIII/3 cruise in January-February 2006 both in time (16 years) and space (the whole of Drake Passage). The repeat of the hydrographical section within 3 weeks permitted different comparisons between the in-situ datasets and the satellite data products. Comparisons suggested that the multi-satellite product improved the temporal resolution on a Jason-1 track.A detailed analysis of the four absolute dynamic topography maps contemporaneous with the ANT-XXIII/3 cruise permitted identification of the location of the frontal branches of the Antarctic Circumpolar Current, of the major Meanders and eddies. This spatial context proved particularly valuable for the interpretation of the in-situ data (see companion papers of Provost et al., 2011; Renault et al., 2011; Sudre et al., 2011).The altimetric time-series documented the long-term trends in sea-surface height, the recurrence of major frontal Meanders and eddies and the statistical links between them. Negative trends in the Yaghan Basin indicated that both the Subantarctic Front and the Polar Front have shifted to the north of their climatological location. This northward shift in the Yaghan Basin contrasts with the large-scale southward shift in the Polar Front current core described in the literature, and is probably related to the local bottom topography in Drake Passage.Sea-level anomaly patterns observed during the cruise were related to statistical modes of the corresponding variations in Drake Passage. For example, the southward meander of the Subantarctic Front at the entrance to Drake Passage was part of a dipole comprising an adjacent Polar Front meander and occurred with a close to annual periodicity.A census of eddies in the Ona Basin revealed that the spatial distribution of anticyclonic eddies was consistent with generation from a meander of the Polar and Southern ACC Fronts over the Ona Seafloor Depression, while cyclonic eddies mostly originated from Meanders of southern fronts associated with two rises on the continental slope: the Ona Rise and the Terror Rise.
Nicolas Barré - One of the best experts on this subject based on the ideXlab platform.
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fronts Meanders and eddies in drake passage during the ant xxiii 3 cruise in january february 2006 a satellite perspective
Deep-sea Research Part Ii-topical Studies in Oceanography, 2011Co-Authors: Nicolas Barré, Christine Provost, Alice Renault, Nathalie SennéchaelAbstract:Abstract We used satellite altimetric data to provide a context for the results of the ANT-XXIII/3 cruise in January–February 2006 both in time (16 years) and space (the whole of Drake Passage). The repeat of the hydrographical section within 3 weeks permitted different comparisons between the in-situ datasets and the satellite data products. Comparisons suggested that the multi-satellite product improved the temporal resolution on a Jason-1 track. A detailed analysis of the four absolute dynamic topography maps contemporaneous with the ANT-XXIII/3 cruise permitted identification of the location of the frontal branches of the Antarctic Circumpolar Current, of the major Meanders and eddies. This spatial context proved particularly valuable for the interpretation of the in-situ data (see companion papers of Provost et al., 2011 ; Renault et al., 2011 ; Sudre et al., 2011 ). The altimetric time-series documented the long-term trends in sea-surface height, the recurrence of major frontal Meanders and eddies and the statistical links between them. Negative trends in the Yaghan Basin indicated that both the Subantarctic Front and the Polar Front have shifted to the north of their climatological location. This northward shift in the Yaghan Basin contrasts with the large-scale southward shift in the Polar Front current core described in the literature, and is probably related to the local bottom topography in Drake Passage. Sea-level anomaly patterns observed during the cruise were related to statistical modes of the corresponding variations in Drake Passage. For example, the southward meander of the Subantarctic Front at the entrance to Drake Passage was part of a dipole comprising an adjacent Polar Front meander and occurred with a close to annual periodicity. A census of eddies in the Ona Basin revealed that the spatial distribution of anticyclonic eddies was consistent with generation from a meander of the Polar and Southern ACC Fronts over the Ona Seafloor Depression, while cyclonic eddies mostly originated from Meanders of southern fronts associated with two rises on the continental slope: the Ona Rise and the Terror Rise.
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Fronts, Meanders and eddies in Drake Passage during the ANT-XXIII/3 cruise in January-February 2006: A satellite perspective
Deep Sea Research Part II: Topical Studies in Oceanography, 2011Co-Authors: Nicolas Barré, Christine Provost, Alice Renault, Nathalie SennéchaelAbstract:We used satellite altimetric data to provide a context for the results of the ANT-XXIII/3 cruise in January-February 2006 both in time (16 years) and space (the whole of Drake Passage). The repeat of the hydrographical section within 3 weeks permitted different comparisons between the in-situ datasets and the satellite data products. Comparisons suggested that the multi-satellite product improved the temporal resolution on a Jason-1 track.A detailed analysis of the four absolute dynamic topography maps contemporaneous with the ANT-XXIII/3 cruise permitted identification of the location of the frontal branches of the Antarctic Circumpolar Current, of the major Meanders and eddies. This spatial context proved particularly valuable for the interpretation of the in-situ data (see companion papers of Provost et al., 2011; Renault et al., 2011; Sudre et al., 2011).The altimetric time-series documented the long-term trends in sea-surface height, the recurrence of major frontal Meanders and eddies and the statistical links between them. Negative trends in the Yaghan Basin indicated that both the Subantarctic Front and the Polar Front have shifted to the north of their climatological location. This northward shift in the Yaghan Basin contrasts with the large-scale southward shift in the Polar Front current core described in the literature, and is probably related to the local bottom topography in Drake Passage.Sea-level anomaly patterns observed during the cruise were related to statistical modes of the corresponding variations in Drake Passage. For example, the southward meander of the Subantarctic Front at the entrance to Drake Passage was part of a dipole comprising an adjacent Polar Front meander and occurred with a close to annual periodicity.A census of eddies in the Ona Basin revealed that the spatial distribution of anticyclonic eddies was consistent with generation from a meander of the Polar and Southern ACC Fronts over the Ona Seafloor Depression, while cyclonic eddies mostly originated from Meanders of southern fronts associated with two rises on the continental slope: the Ona Rise and the Terror Rise.
Juliet Hermes - One of the best experts on this subject based on the ideXlab platform.
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agulhas current Meanders facilitate shelf slope exchange on the eastern agulhas bank
Journal of Geophysical Research, 2018Co-Authors: N Malan, Bjorn C Backeberg, Arne Biastoch, Jonathan V Durgadoo, Annette Samuelsen, C J C Reason, Juliet HermesAbstract:Large solitary Meanders are arguably the dominant mode of variability in the Agulhas Current. Observational studies have shown that these large Meanders are associated with strong upwelling velocities and affect the shelf circulation for over 100 days per year. Here 10-year time series from two ocean general circulation models are used to create a composite picture of the Agulhas Current and its interactions with the shelf circulation in meandering and nonmeandering modes. Both models show good agreement with the size, propagation speed, and frequency of observed Meanders. These composite Meanders are then used to examine the response of shelf waters to the onset of large Meanders, with the use of model output enabling the dynamics at depth to be explored. Results show a composite mean warming of up to 3°C of depth-averaged temperature along the shelf edge associated with an intrusion of the current jet onto the shelf driven by an intensification of the flow along the leading edge of large Meanders. However, this intensification of flow results in cooling of bottom waters, driving cold events at the shelf break of <10°C at 100 m. Thus, the intensification of the current jet associated with large meander events appears to drive strong up and downwelling events across the inshore front of the Agulhas Current, facilitating shelf-slope exchange.
Christine Provost - One of the best experts on this subject based on the ideXlab platform.
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fronts Meanders and eddies in drake passage during the ant xxiii 3 cruise in january february 2006 a satellite perspective
Deep-sea Research Part Ii-topical Studies in Oceanography, 2011Co-Authors: Nicolas Barré, Christine Provost, Alice Renault, Nathalie SennéchaelAbstract:Abstract We used satellite altimetric data to provide a context for the results of the ANT-XXIII/3 cruise in January–February 2006 both in time (16 years) and space (the whole of Drake Passage). The repeat of the hydrographical section within 3 weeks permitted different comparisons between the in-situ datasets and the satellite data products. Comparisons suggested that the multi-satellite product improved the temporal resolution on a Jason-1 track. A detailed analysis of the four absolute dynamic topography maps contemporaneous with the ANT-XXIII/3 cruise permitted identification of the location of the frontal branches of the Antarctic Circumpolar Current, of the major Meanders and eddies. This spatial context proved particularly valuable for the interpretation of the in-situ data (see companion papers of Provost et al., 2011 ; Renault et al., 2011 ; Sudre et al., 2011 ). The altimetric time-series documented the long-term trends in sea-surface height, the recurrence of major frontal Meanders and eddies and the statistical links between them. Negative trends in the Yaghan Basin indicated that both the Subantarctic Front and the Polar Front have shifted to the north of their climatological location. This northward shift in the Yaghan Basin contrasts with the large-scale southward shift in the Polar Front current core described in the literature, and is probably related to the local bottom topography in Drake Passage. Sea-level anomaly patterns observed during the cruise were related to statistical modes of the corresponding variations in Drake Passage. For example, the southward meander of the Subantarctic Front at the entrance to Drake Passage was part of a dipole comprising an adjacent Polar Front meander and occurred with a close to annual periodicity. A census of eddies in the Ona Basin revealed that the spatial distribution of anticyclonic eddies was consistent with generation from a meander of the Polar and Southern ACC Fronts over the Ona Seafloor Depression, while cyclonic eddies mostly originated from Meanders of southern fronts associated with two rises on the continental slope: the Ona Rise and the Terror Rise.
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Fronts, Meanders and eddies in Drake Passage during the ANT-XXIII/3 cruise in January-February 2006: A satellite perspective
Deep Sea Research Part II: Topical Studies in Oceanography, 2011Co-Authors: Nicolas Barré, Christine Provost, Alice Renault, Nathalie SennéchaelAbstract:We used satellite altimetric data to provide a context for the results of the ANT-XXIII/3 cruise in January-February 2006 both in time (16 years) and space (the whole of Drake Passage). The repeat of the hydrographical section within 3 weeks permitted different comparisons between the in-situ datasets and the satellite data products. Comparisons suggested that the multi-satellite product improved the temporal resolution on a Jason-1 track.A detailed analysis of the four absolute dynamic topography maps contemporaneous with the ANT-XXIII/3 cruise permitted identification of the location of the frontal branches of the Antarctic Circumpolar Current, of the major Meanders and eddies. This spatial context proved particularly valuable for the interpretation of the in-situ data (see companion papers of Provost et al., 2011; Renault et al., 2011; Sudre et al., 2011).The altimetric time-series documented the long-term trends in sea-surface height, the recurrence of major frontal Meanders and eddies and the statistical links between them. Negative trends in the Yaghan Basin indicated that both the Subantarctic Front and the Polar Front have shifted to the north of their climatological location. This northward shift in the Yaghan Basin contrasts with the large-scale southward shift in the Polar Front current core described in the literature, and is probably related to the local bottom topography in Drake Passage.Sea-level anomaly patterns observed during the cruise were related to statistical modes of the corresponding variations in Drake Passage. For example, the southward meander of the Subantarctic Front at the entrance to Drake Passage was part of a dipole comprising an adjacent Polar Front meander and occurred with a close to annual periodicity.A census of eddies in the Ona Basin revealed that the spatial distribution of anticyclonic eddies was consistent with generation from a meander of the Polar and Southern ACC Fronts over the Ona Seafloor Depression, while cyclonic eddies mostly originated from Meanders of southern fronts associated with two rises on the continental slope: the Ona Rise and the Terror Rise.
Alice Renault - One of the best experts on this subject based on the ideXlab platform.
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fronts Meanders and eddies in drake passage during the ant xxiii 3 cruise in january february 2006 a satellite perspective
Deep-sea Research Part Ii-topical Studies in Oceanography, 2011Co-Authors: Nicolas Barré, Christine Provost, Alice Renault, Nathalie SennéchaelAbstract:Abstract We used satellite altimetric data to provide a context for the results of the ANT-XXIII/3 cruise in January–February 2006 both in time (16 years) and space (the whole of Drake Passage). The repeat of the hydrographical section within 3 weeks permitted different comparisons between the in-situ datasets and the satellite data products. Comparisons suggested that the multi-satellite product improved the temporal resolution on a Jason-1 track. A detailed analysis of the four absolute dynamic topography maps contemporaneous with the ANT-XXIII/3 cruise permitted identification of the location of the frontal branches of the Antarctic Circumpolar Current, of the major Meanders and eddies. This spatial context proved particularly valuable for the interpretation of the in-situ data (see companion papers of Provost et al., 2011 ; Renault et al., 2011 ; Sudre et al., 2011 ). The altimetric time-series documented the long-term trends in sea-surface height, the recurrence of major frontal Meanders and eddies and the statistical links between them. Negative trends in the Yaghan Basin indicated that both the Subantarctic Front and the Polar Front have shifted to the north of their climatological location. This northward shift in the Yaghan Basin contrasts with the large-scale southward shift in the Polar Front current core described in the literature, and is probably related to the local bottom topography in Drake Passage. Sea-level anomaly patterns observed during the cruise were related to statistical modes of the corresponding variations in Drake Passage. For example, the southward meander of the Subantarctic Front at the entrance to Drake Passage was part of a dipole comprising an adjacent Polar Front meander and occurred with a close to annual periodicity. A census of eddies in the Ona Basin revealed that the spatial distribution of anticyclonic eddies was consistent with generation from a meander of the Polar and Southern ACC Fronts over the Ona Seafloor Depression, while cyclonic eddies mostly originated from Meanders of southern fronts associated with two rises on the continental slope: the Ona Rise and the Terror Rise.
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Fronts, Meanders and eddies in Drake Passage during the ANT-XXIII/3 cruise in January-February 2006: A satellite perspective
Deep Sea Research Part II: Topical Studies in Oceanography, 2011Co-Authors: Nicolas Barré, Christine Provost, Alice Renault, Nathalie SennéchaelAbstract:We used satellite altimetric data to provide a context for the results of the ANT-XXIII/3 cruise in January-February 2006 both in time (16 years) and space (the whole of Drake Passage). The repeat of the hydrographical section within 3 weeks permitted different comparisons between the in-situ datasets and the satellite data products. Comparisons suggested that the multi-satellite product improved the temporal resolution on a Jason-1 track.A detailed analysis of the four absolute dynamic topography maps contemporaneous with the ANT-XXIII/3 cruise permitted identification of the location of the frontal branches of the Antarctic Circumpolar Current, of the major Meanders and eddies. This spatial context proved particularly valuable for the interpretation of the in-situ data (see companion papers of Provost et al., 2011; Renault et al., 2011; Sudre et al., 2011).The altimetric time-series documented the long-term trends in sea-surface height, the recurrence of major frontal Meanders and eddies and the statistical links between them. Negative trends in the Yaghan Basin indicated that both the Subantarctic Front and the Polar Front have shifted to the north of their climatological location. This northward shift in the Yaghan Basin contrasts with the large-scale southward shift in the Polar Front current core described in the literature, and is probably related to the local bottom topography in Drake Passage.Sea-level anomaly patterns observed during the cruise were related to statistical modes of the corresponding variations in Drake Passage. For example, the southward meander of the Subantarctic Front at the entrance to Drake Passage was part of a dipole comprising an adjacent Polar Front meander and occurred with a close to annual periodicity.A census of eddies in the Ona Basin revealed that the spatial distribution of anticyclonic eddies was consistent with generation from a meander of the Polar and Southern ACC Fronts over the Ona Seafloor Depression, while cyclonic eddies mostly originated from Meanders of southern fronts associated with two rises on the continental slope: the Ona Rise and the Terror Rise.