Why is mean sea level along the Indian coast higher in the Bay of Bengal than in the Arabian Sea?

Details Why is mean sea level along the Indian coast higher in the Bay of Bengal than in the Arabian Sea? Why is mean sea level along the Indian coast higher in the Bay of Bengal than in the Arabian Sea?

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28..563s&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 4, p. 563-566

Physics

5

Global Change, Oceanography: Physical: Air/Sea Interactions, Oceanography: Physical: Sea Level Variations, Information Related To Geographic Region: Indian Ocean

Scientific paper

Levelling observations conducted during the Great Trigonometrical Survey of India (1858-1909) and subsequent observations showed that mean sea level along the coast of India is higher in the Bay of Bengal than in the Arabian Sea, the difference in sea level between Vishakhapatnam and Mumbai (Bombay) being about 30 cm. Using simulations with a 1 1/2-layer reduced-gravity model, we attribute this to the mean, large-scale wind-forced circulation (~60%) and the alongshore gradient in salinity (~40%). The former (latter) is a consequence of the distribution of wind stress (rainfall) because of the monsoon.

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