The University of Southampton
University of Southampton Institutional Repository

Characteristics and variability of the Indonesian throughflow water at the outflow straits

Characteristics and variability of the Indonesian throughflow water at the outflow straits
Characteristics and variability of the Indonesian throughflow water at the outflow straits
Property structure and variability of the Indonesian Throughflow Water in the major outflow straits (Lombok, Ombai and Timor) are revised from newly available data sets and output from a numerical model. Emphasis is put on the upper layers of the Indonesian Throughflow that impacts the heat and freshwater fluxes of the South Equatorial Current in the Indian Ocean. During the April–June monsoon transition the salinity maximum signature of the North Pacific thermocline water is strongly attenuated. This freshening of the thermocline layer is more intense in Ombai and is related to the supply of fresh near-surface Java Sea water that is drawn eastward by surface monsoon currents and subject to strong diapycnal mixing. The freshwater exits to the Indian Ocean first through Lombok Strait and later through Ombai and Timor, with an advective phase lag of between one and five months. Because of these phase lags, the fresher surface and thermocline water is found in the southeast Indian Ocean from the beginning of the monsoon transition period in April through until the end of the southeast monsoon in September, a much longer time period than previously estimated.
Indonesian throughflow water, Seasonal cycles, Freshening thermocline, Java Sea
0967-0637
1942-1954
Atmadipoera, Agus
62a3362f-3177-47c3-9ba8-f8a8c0c41619
Molcard, Robert
f81d0579-da1b-42ed-8d70-21078f63ad10
Madec, Gurvan
ffb28deb-4bbd-4a4c-914f-492f813e4864
Wijffels, Susan
14a5ad98-2176-41b8-b3f9-a45599d1e98f
Sprintall, Janet
b7debd02-ea8a-44c9-b097-c5ac231a1bb2
Koch-Larrouy, Ariane
c53ebc39-93b2-49c4-9389-241f9d491c8a
Jaya, Indra
45ab7c7c-ad11-4052-b8cf-36684d7c88c2
Supangat, Agus
f9ffcdcd-4d36-4e60-8ec7-4e7e7964d620
Atmadipoera, Agus
62a3362f-3177-47c3-9ba8-f8a8c0c41619
Molcard, Robert
f81d0579-da1b-42ed-8d70-21078f63ad10
Madec, Gurvan
ffb28deb-4bbd-4a4c-914f-492f813e4864
Wijffels, Susan
14a5ad98-2176-41b8-b3f9-a45599d1e98f
Sprintall, Janet
b7debd02-ea8a-44c9-b097-c5ac231a1bb2
Koch-Larrouy, Ariane
c53ebc39-93b2-49c4-9389-241f9d491c8a
Jaya, Indra
45ab7c7c-ad11-4052-b8cf-36684d7c88c2
Supangat, Agus
f9ffcdcd-4d36-4e60-8ec7-4e7e7964d620

Atmadipoera, Agus, Molcard, Robert, Madec, Gurvan, Wijffels, Susan, Sprintall, Janet, Koch-Larrouy, Ariane, Jaya, Indra and Supangat, Agus (2009) Characteristics and variability of the Indonesian throughflow water at the outflow straits. Deep Sea Research Part I: Oceanographic Research Papers, 56 (11), 1942-1954. (doi:10.1016/j.dsr.2009.06.004).

Record type: Article

Abstract

Property structure and variability of the Indonesian Throughflow Water in the major outflow straits (Lombok, Ombai and Timor) are revised from newly available data sets and output from a numerical model. Emphasis is put on the upper layers of the Indonesian Throughflow that impacts the heat and freshwater fluxes of the South Equatorial Current in the Indian Ocean. During the April–June monsoon transition the salinity maximum signature of the North Pacific thermocline water is strongly attenuated. This freshening of the thermocline layer is more intense in Ombai and is related to the supply of fresh near-surface Java Sea water that is drawn eastward by surface monsoon currents and subject to strong diapycnal mixing. The freshwater exits to the Indian Ocean first through Lombok Strait and later through Ombai and Timor, with an advective phase lag of between one and five months. Because of these phase lags, the fresher surface and thermocline water is found in the southeast Indian Ocean from the beginning of the monsoon transition period in April through until the end of the southeast monsoon in September, a much longer time period than previously estimated.

Full text not available from this repository.

More information

Published date: November 2009
Keywords: Indonesian throughflow water, Seasonal cycles, Freshening thermocline, Java Sea

Identifiers

Local EPrints ID: 73074
URI: https://eprints.soton.ac.uk/id/eprint/73074
ISSN: 0967-0637
PURE UUID: 2ef02343-a400-4c06-8c2c-0f15234b7298

Catalogue record

Date deposited: 26 Feb 2010
Last modified: 19 Jul 2019 23:41

Export record

Altmetrics

Contributors

Author: Agus Atmadipoera
Author: Robert Molcard
Author: Gurvan Madec
Author: Susan Wijffels
Author: Janet Sprintall
Author: Ariane Koch-Larrouy
Author: Indra Jaya
Author: Agus Supangat

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×