globalchange  > 气候减缓与适应
DOI: 10.1002/2017JC013459
Scopus记录号: 2-s2.0-85042529938
论文题名:
Seismic Characterization of Oceanic Water Masses, Water Mass Boundaries, and Mesoscale Eddies SE of New Zealand
作者: Gorman A.R.; Smillie M.W.; Cooper J.K.; Bowman M.H.; Vennell R.; Holbrook W.S.; Frew R.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期:2
起始页码: 1519
结束页码: 1532
语种: 英语
英文关键词: mesoscale eddy ; seismic oceanography ; Southland Current ; Subantarctic Front ; Subantarctic Water ; Subtropical Front
Scopus关键词: Antarctic Intermediate Water ; mesoscale eddy ; mixing ; oceanic current ; oceanic front ; seismic reflection ; subtropical region ; upper ocean ; water mass ; New Zealand ; Pacific Ocean ; Southland Current
英文摘要: The Subtropical and Subantarctic Fronts, which separate Subtropical, Subantarctic, and Antarctic Intermediate Waters, are diverted to the south of New Zealand by the submerged continental landmass of Zealandia. In the upper ocean of this region, large volumes of dissolved or suspended material are intermittently transported across the Subtropical Front; however, the mechanisms of such transport processes are enigmatic. Understanding these oceanic boundaries in three dimensions generally depends on measurements collected from stationary vessels and moorings. The details of these data sets, which are critical for understanding how water masses interact and mix at the fine-scale (<10 m) to mesoscale (10–100 km), are inadequately constrained due to resolution considerations. Southeast of New Zealand, high-resolution seismic reflection images of oceanic water masses have been produced using petroleum industry data. These seismic sections clearly show three main water masses, the boundary zones (fronts) between them, and associated thermohaline fine structure that may be related to the mixing of water masses in this region. Interpretations of the data suggest that the Subtropical Front in this region is a landward-dipping zone, with a width that can vary between 20 and 40 km. The boundary zone between Subantarctic Waters and the underlying Antarctic Intermediate Waters is also observed to dip landward. Several isolated lenses have been identified on the three data sets, ranging in size from 9 to 30 km in diameter. These lenses are interpreted to be mesoscale eddies that form at relatively shallow depths along the south side of the Subtropical Front. © 2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114487
Appears in Collections:气候减缓与适应

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作者单位: Department of Geology, University of Otago, Dunedin, New Zealand; Department of Marine Science, University of Otago, Dunedin, New Zealand; Now at Cawthron Institute, Nelson, New Zealand; Department of Geology and Geophysics, University of Wyoming, Laramie, WY, United States; Now at Virginia Tech, Blacksburg, VA, United States; Department of Chemistry, University of Otago, Dunedin, New Zealand

Recommended Citation:
Gorman A.R.,Smillie M.W.,Cooper J.K.,et al. Seismic Characterization of Oceanic Water Masses, Water Mass Boundaries, and Mesoscale Eddies SE of New Zealand[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(2)
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