An eastern Indian Ocean ³He section from Australia to Bali: Evidence for a Deep Pacific-Indian Throughflow
Article first published online: 7 DEC 2012
Copyright 1997 by the American Geophysical Union.
Geophysical Research Letters
Volume 24, Issue 21, pages 2577–2580, 1 November 1997
How to Cite
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 8 JUL 1997
- Manuscript Received: 31 MAR 1997
The distribution of ³He has been measured on an Australia-Bali transect, across the Pacific-Indian throughflow region of the Eastern Indian Ocean, in SE and NW monsoonal regimes. Additional samples were also collected directly on the main sills over which water is exchanged between the Indonesian Seas and the Indian Ocean. The ³He data show that the South Banda Sea deep waters, between 800 and 1400 m, leave the Banda basin over the sills in the straits of Sumba, Savu, Roti and Timor and enter the equatorial Indian Ocean. The permanence of the ³He in both opposite monsoonal regimes, and the only weak dilution of the ³He signal between the straits and the Australia-Bali section hundreds of kilometers apart, suggest that this deep outflow is not negligible.