Mantle 3He distribution and deep circulation in the Indian Ocean
Olson, Donald B.
Lupton, John E.
Jenkins, William J.
MetadataShow full item record
The World Ocean Circulation Experiment Indian Ocean helium isotope data are mapped and features of intermediate and deep circulation are inferred and discussed. The 3He added to the deep Indian Ocean originates from (1) a strong source on the mid-ocean ridge at about 19°S/65°E, (2) a source located in the Gulf of Aden in the northwestern Indian Ocean, (3) sources located in the convergent margins in the northeastern Indian Ocean, and (4) water imported from the Indonesian Seas. The main circulation features inferred from the 3He distribution include (1) deep (2000–3000 m) eastward flow in the central Indian Ocean, which overflows into the West Australian Basin through saddles in the Ninetyeast Ridge, (2) a deep (2000–3000 m) southwestward flow in the western Indian Ocean, and (3) influx of Banda Sea Intermediate Waters associated with the deep core (1000–1500 m) of the through flow from the Pacific Ocean. The large-scale 3He distribution is consonant with the known pathways of deep and bottom water circulation in the Indian Ocean.
Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 109 (2004): C06012, doi:10.1029/2003JC002028.
Suggested CitationArticle: Srinivasan, Ashwanth, Top, Zafer, Schlosser, Peter, Hohmann, Roland, Iskandarani, Mohamed, Olson, Donald B., Lupton, John E., Jenkins, William J., "Mantle 3He distribution and deep circulation in the Indian Ocean", Journal of Geophysical Research 109 (2004): C06012, DOI:10.1029/2003JC002028, https://hdl.handle.net/1912/3711
Showing items related by title, author, creator and subject.
Schmitz, William J. (Woods Hole Oceanographic Institution, 1996-12)This is the second and final volume of a report that describes some of my investigations over the last 35 years or so into low-frequency ocean current structures, a topic which I will call the World Ocean Circulation ...
The influence of Indian Ocean atmospheric circulation on Warm Pool hydroclimate during the Holocene epoch Tierney, Jessica E.; Oppo, Delia W.; LeGrande, Allegra N.; Huang, Yongsong; Rosenthal, Yair; Linsley, Braddock K. (American Geophysical Union, 2012-10-04)Existing paleoclimate data suggest a complex evolution of hydroclimate within the Indo-Pacific Warm Pool (IPWP) during the Holocene epoch. Here we introduce a new leaf wax isotope record from Sulawesi, Indonesia and compare ...
Perez-Hernandez, M. Dolores; Hernandez-Guerra, Alonso; Joyce, Terrence M.; Velez-Belchi, Pedro (American Meteorological Society, 2012-12)Meridional velocity, mass, and heat transport in the equatorial oceans are difficult to estimate because of the nonapplicability of the geostrophic balance. For this purpose a steady-state model is utilized in the equatorial ...