GSTDTAP  > 气候变化
DOI10.1002/joc.5907
Features of locally and remotely generated surface gravity waves in the inner-shelf region of northwestern Bay of Bengal
Nair, M. Anjali; Kumar, V. Sanil; Amrutha, M. M.; Murty, V. S. N.
2019-03-15
发表期刊INTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN0899-8418
EISSN1097-0088
出版年2019
卷号39期号:3页码:1644-1664
文章类型Article
语种英语
国家India
英文摘要

In this article, we studied the characteristics of locally and remotely generated wind waves in the inner-shelf region of northwestern Bay of Bengal (BoB) based on the measured wave data. Two well-differentiated wave systems, one young sea from the east-southeast and another more developed swell from the south lead to bimodality in the wave spectrum. Wind-sea predominance is not observed in the monthly average wave spectrum and in all the months swells dominated indicating a swell-driven wave regime. During the monsoon (JJAS), the wave climate is dominated by long-period swell from the south-southeast and the short fetch during the northeast monsoon (ONDJ) leads to weaker easterly swells, while the effects of the sea/land breeze influence on the wave generation are more relevant during this season. During November-April, diurnal variation of 0.15 m in significant wave height (SWH) is observed. The study based on seasonally averaged ERA-Interim reanalysis data reveals a weak connection between the waves in the northwestern BoB and the El Nino Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) events. The waves are influenced by ENSO events during June-September and by IOD events during October-January, which consequently caused inter-annual variations in monthly average SWH. The present study, however, did not show a significant inter-annual variability in annual mean SWH during 1979-2015.


英文关键词Indian wave climate mixed sea state multipeaked spectra ocean science surface waves swells wind-seas
领域气候变化
收录类别SCI-E
WOS记录号WOS:000461606600034
WOS关键词INDIAN-OCEAN DIPOLE ; EQUILIBRIUM RANGE ; WIND ; VARIABILITY ; CLIMATE ; RAINFALL ; CYCLONE ; SPECTRA ; HEIGHT ; TRENDS
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/37215
专题气候变化
作者单位CSIR Natl Inst Oceanog Council Sci & Ind Res, Ocean Engn Div, Panaji 403004, Goa, India
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Nair, M. Anjali,Kumar, V. Sanil,Amrutha, M. M.,et al. Features of locally and remotely generated surface gravity waves in the inner-shelf region of northwestern Bay of Bengal[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019,39(3):1644-1664.
APA Nair, M. Anjali,Kumar, V. Sanil,Amrutha, M. M.,&Murty, V. S. N..(2019).Features of locally and remotely generated surface gravity waves in the inner-shelf region of northwestern Bay of Bengal.INTERNATIONAL JOURNAL OF CLIMATOLOGY,39(3),1644-1664.
MLA Nair, M. Anjali,et al."Features of locally and remotely generated surface gravity waves in the inner-shelf region of northwestern Bay of Bengal".INTERNATIONAL JOURNAL OF CLIMATOLOGY 39.3(2019):1644-1664.
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