| Records |
| Author |
Mayet C, Testut L, Legresy B, Lescarmontier L, Lyard F, |
| Title |
High-resolution barotropic modeling and the calving of the Mertz Glacier, East Antarctica
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Type |
Journal Article |
| Year |
2013 |
Publication |
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS |
Abbreviated Journal |
0148-0227 |
| Volume |
118 |
Issue |
10 |
Pages |
5267-5279 |
| Keywords |
0732 Icebergs, 0758 Remote sensing, 4512 Currents, 4534 Hydrodynamic modeling, 9310 Antarctica, barotropic, calving, icebergs, Mertz Glacier, model, |
| Abstract |
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| Programme |
1050 |
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2169-9291 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
4269 |
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| Author |
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| Title |
Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: Impact on water mass properties
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Type |
Journal Article |
| Year |
2014 |
Publication |
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS |
Abbreviated Journal |
J. Geophys. Res. |
| Volume |
119 |
Issue |
1 |
Pages |
377-393 |
| Keywords |
0750 Sea ice, 0752 Polynas, 0758 Remote sensing, 4207 Arctic and Antarctic oceanography, 4283 Water masses, AMSR-E satellite observations, brine enriched shelf water, ice production model, polynya area, Storfjorden, supercooling water, |
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| Programme |
1015 |
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| ISSN |
2169-9291 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
4293 |
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| Author |
Mayet C, Testut L, Legresy B, Lescarmontier L, Lyard F, |
| Title |
High-resolution barotropic modeling and the calving of the Mertz Glacier, East Antarctica
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Type |
Journal Article |
| Year |
2013 |
Publication |
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS |
Abbreviated Journal |
J. Geophys. Res. Oceans |
| Volume |
118 |
Issue |
10 |
Pages |
5267-5279 |
| Keywords |
0732 Icebergs, 0758 Remote sensing, 4512 Currents, 4534 Hydrodynamic modeling, 9310 Antarctica, barotropic, calving, icebergs, Mertz Glacier, model, |
| Abstract |
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| Programme |
688 |
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| ISSN |
2169-9291 |
ISBN |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
4535 |
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| Author |
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| Title |
Study of the phytoplankton plume dynamics off the Crozet Islands (Southern Ocean): A geochemical-physical coupled approach
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Type |
Journal Article |
| Year |
2014 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
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| Volume |
119 |
Issue |
4 |
Pages |
2227-2237 |
| Keywords |
Southern Ocean, Crozet Islands, iron fertilization, radium, altimetry, GEOTRACES, 4825 Geochemistry, 4860 Radioactivity and radioisotopes, 4219 Continental shelf and slope processes, 4223 Descriptive and regional oceanography, |
| Abstract |
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| Programme |
1077 |
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| ISSN |
2169-9291 |
ISBN |
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Expedition |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
5276 |
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| Author |
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| Title |
Heat fluxes across the Antarctic Circumpolar Current in Drake Passage: Mean flow and eddy contributions
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Type |
Journal Article |
| Year |
2014 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
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| Volume |
119 |
Issue |
9 |
Pages |
6381-6402 |
| Keywords |
Antarctic Circumpolar Current, heat fluxes, Drake Passage, current meter moorings, high-resolution model, 4532 General circulation, |
| Abstract |
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| Programme |
1061 |
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| ISSN |
2169-9291 |
ISBN |
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Approved |
yes |
| Call Number |
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Serial |
5602 |
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| Author |
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| Title |
Polar Front around the Kerguelen Islands: An up-to-date determination and associated circulation of surface/subsurface waters |
Type |
Book Chapter |
| Year |
2014 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
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| Volume |
119 |
Issue |
10 |
Pages |
6575-6592 |
| Keywords |
Polar Front, Kerguelen, Southern Ocean, 4207 Arctic and Antarctic oceanography, 4528 Fronts and jets, |
| Abstract |
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| Programme |
688,1061 |
| Campaign |
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Thesis |
Bachelor's thesis |
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Edition |
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| ISSN |
2169-9291 |
ISBN |
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Medium |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
5628 |
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| Author |
Adam T. Devlin, Jiayi Pan, Hui Lin |
| Title |
Multi-Timescale Analysis of Tidal Variability in the Indian Ocean Using Ensemble Empirical Mode Decomposition |
Type |
Journal |
| Year |
2020 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
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| Volume |
125 |
Issue |
12 |
Pages |
e2020JC016604 |
| Keywords |
Coastal risks Ensemble Empirical Mode Decomposition Indian Ocean Sea level variability Tidal evolution Tidal variability |
| Abstract |
Ocean tides have been observed to be changing worldwide for nonastronomical reasons, which can combine with rising mean sea level (MSL) to increase the long-term impact to coastal regions. Tides can also exhibit variability at shorter timescales, which may be correlated with short-term variability in MSL. This short-term coupling may yield higher peak water levels and increased impacts of exceedance events that may be equally significant as long-term sea level rise. Previous studies employed the tidal anomaly correlation (TAC) method to quantify the sensitivity of tides to MSL fluctuations at long-period (>20 years) tide gauges in basin-scale surveys of the Pacific and Atlantic Ocean, finding that TACs exist at most locations. The Indian Ocean also experiences significant sea level rise and tidal variability yet has been less studied due to a sparse network of tide gauges. However, since the beginning of the 21st century, more tide gauges have been established in a wider geographical range, bringing the possibility of better estimates of tidal and MSL variability. Here, we improve the TAC approach, using the ensemble empirical mode decomposition (EEMD) method to analyze tidal amplitudes and sea level at multiple frequency bands, allowing a more effective use of shorter record tide gauges and better understanding of multiple timescales of tidal variability. We apply this approach to 73 tide gauges in the Indian Ocean to better quantify tidal variability in these under-studied regions, finding that the majority of locations exhibit significant correlations of tides and MSL. |
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688 |
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| ISSN |
2169-9291 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7956 |
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| Author |
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| Title |
Response of the Arctic Marine Inorganic Carbon System to Ice Algae and Under-Ice Phytoplankton Blooms: A Case Study Along the Fast-Ice Edge of Baffin Bay |
Type |
Journal |
| Year |
2019 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
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| Volume |
124 |
Issue |
2 |
Pages |
1277-1293 |
| Keywords |
air-sea CO2 exchange arctic dissolved inorganic carbon pCO2 phytoplankton sea ice |
| Abstract |
Past research in seasonally ice-covered Arctic seas has suggested that ice algae play a role in reducing dissolved inorganic carbon (DIC) during spring, preconditioning surface waters to low dissolved CO2 (pCO2sw), and uptake of atmospheric CO2 during the ice-free season. The potential role of under-ice phytoplankton blooms on DIC and pCO2sw has not often been considered. In this study we examined the inorganic carbon system beneath landfast sea ice starting midway through a bottom ice algae bloom and concluding in the early stages of an under-ice phytoplankton bloom. During most of the ice algae bloom we observed a slight increase in DIC/pCO2sw in surface waters, as opposed to the expected reduction. Biomass calculations confirm that the role of ice algae on DIC/pCO2sw in the study region were minor and that this null result may be widely applicable. During snow melt, we observed an under-ice phytoplankton bloom (to 10 mg/m3 Chl a) that did reduce DIC and pCO2sw. We conclude that under-ice phytoplankton blooms are an important biological mechanism that may predispose some Arctic seas to act as a CO2 sink at the time of ice breakup. We also found that pCO2sw was undersaturated at the study location even at the beginning of our sampling period, consistent with several other studies that have measured under-ice pCO2sw in late winter or early spring. Finally, we present the first measurements of carbonate saturation states for this region, which may be useful for assessing the vulnerability of a local soft-shelled clam fishery to ocean acidification. |
| Programme |
1164 |
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| ISSN |
2169-9291 |
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Approved |
yes |
| Call Number |
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Serial |
8122 |
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| Author |
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| Title |
High turnover rates indicated by changes in the fixed N forms and their stable isotopes in Antarctic landfast sea ice |
Type |
Journal |
| Year |
2015 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
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| Volume |
120 |
Issue |
4 |
Pages |
3079-3097 |
| Keywords |
Antarctic isotopes nitrogen nutrients sea ice |
| Abstract |
We report concentration and nitrogen and oxygen isotopic measurements of nitrate, total dissolved nitrogen, and particulate nitrogen from Antarctic landfast sea ice, covering almost the complete seasonal cycle of sea ice growth and decay (from April to November). When sea ice forms in autumn, ice algae growth depletes nitrate and accumulates organic N within the ice. Subsequent low biological activity in winter imposes minor variations in the partitioning of fixed N. In early spring, the coupling between nitrate assimilation and brine convection at the sea ice bottom traps a large amount of fixed N within sea ice, up to 20 times higher than in the underlying seawater. At this time, remineralization and nitrification also accelerate, yielding nitrate concentrations up to 5 times higher than in seawater. Nitrate ?15N and ?18O are both elevated, indicating a near-balance between nitrification and nitrate assimilation. These findings require high microbially mediated turnover rates for the large fixed N pools, including nitrate. When sea ice warms in the spring, ice algae grow through the full thickness of the ice. The warming stratifies the brine network, which limits the exchange with seawater, causing the once-elevated nitrate pool to be nearly completely depleted. The nitrate isotope data point to light limitation at the base of landfast ice as a central characteristic of the environment, affecting its N cycling (e.g., allowing for nitrification) and impacting algal physiology (e.g., as reflected in the N and O isotope effects of nitrate assimilation). |
| Programme |
1010 |
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2169-9291 |
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Approved |
yes |
| Call Number |
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Serial |
8142 |
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| Author |
N. Ribeiro, L. Herraiz-Borreguero, S. R. Rintoul, C. R. McMahon, M. Hindell, R. Harcourt, G. Williams |
| Title |
Warm Modified Circumpolar Deep Water Intrusions Drive Ice Shelf Melt and Inhibit Dense Shelf Water Formation in Vincennes Bay, East Antarctica |
Type |
Journal |
| Year |
2021 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
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| Volume |
126 |
Issue |
8 |
Pages |
e2020JC016998 |
| Keywords |
AABW Antarctic Coastal Circulation Antarctic Margins basal melt mCDW intrusions seal CTD |
| Abstract |
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| Programme |
109 |
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2169-9291 |
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Approved |
yes |
| Call Number |
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Serial |
8211 |
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