Heat flow asymmetry of the Western-Indian Ridge

 
PIIS086956520003038-4-1
DOI10.31857/S086956520003038-4
Publication type Article
Status Published
Authors
Occupation: Laboratory Chief
Affiliation: Geological Institute, RAS
Address: Russian Federation, Moscow
Occupation: Senior Research Fellow
Affiliation: Geological Institute, RAS
Address: Russian Federation, Moscow
Journal nameDoklady Akademii nauk
EditionVolume 482 Issue 5
Pages593-597
Abstract

A statistically significant asymmetry of geothermal data was established as a result of a heat flow density statistical analysis along the geotravers crossing the West Indian Ridge in the southwestern part of the ocean. Applying the Cramer-Welch criterion to compare the samples of heat flow density, it was found that the western ridge slope and the adjacent abyssal basins have a higher heat flow than the same structural elements eastern of the ridge axis. The asymmetry existence in the crust structure and in magnetic field is also noted. For phenomenon explaining propose a model of the Coriolis force affect acting on the upward magma flux in the ridge divergent zone.

Keywordsheat flow, asymmetry, Indian ocean, section, Mid ridge, statistic, Coriolis force
AcknowledgmentРабота выполнена при финансовой поддержке госбюджетной темы № 0135-2015-0021 и Программы Президиума РАН № 49.
Received12.11.2018
Publication date12.11.2018
Cite   Download pdf To download PDF you should sign in
Размещенный ниже текст является ознакомительной версией и может не соответствовать печатной

views: 1255

Readers community rating: votes 0

1. Podgornykh L.V., Khutorskoj M.D. Geotermicheskaya asimmetriya sredinnykh khrebtov Mirovogo okeana // Geotektonika. 1999. № 3. S. 21-42.

2. Khutorskoj M.D., Polyak B.G. Teplovoj potok v transformnykh razlomakh Severnoj Atlantiki i Yugo-Vostochnoj Patsifiki //Geotektonika, №2. 2017. S.55-66.

3. Khutorskoj M.D., Teveleva E.A., Podgornykh L.V. Geotermicheskaya asimmetriya transformnykh razlomov ehkvatorial'noj chasti Atlanticheskogo okeana //Doklady akademii nauk, t.475. №3. 2017. S.325-328.

4. Glebovskij V.Yu., Kaminskij V.D., Osipov V.A. Struktura anomal'nogo magnitnogo polya ot sredinnogo khrebta do Angol'skogo shel'fa //Litosfera Angol'skoj kotloviny i vostochnogo sklona Yuzhno-Atlanticheskogo khrebta. L., 1986. S.70-80.

5. Budanov V.G., Ermakov B.V., Podgornykh L.V. Geophysical asymmetry of the wings of mid-Atlantic ridge(MAR): gravity, magnetic fields, heat flow //European Geophysical Society, Annales Geophysical, part I, Society Symposia, Solid Earth Geophysics & Natural Hazards, Supplement I to Volume 15, SE27 Tectonic evolution and thermal structure at mid-ocean ridges, 1997, p.161.

6. Naryshkin G.D., Pogrebitskij Yu.E. Morfostruktura dna Yugo-Vostochnoj Atlantiki //Litosfera Angol'skoj kotloviny i vostochnogo sklona Yuzhno-Atlanticheskogo khrebta. L., 1986. S.10-23.

7. Patriat P., Sauter D., Munschy M., Parson L. A survey of the Southwest Indian Ridge axis between Atlantis II Fracture zone and the Indian Ocean Triple Junction : Regional setting and large-scale segmentation //Mar. Geophys. Res., v.19. 1997. P.457-480.

8. Hosford A. Crustal accretion and Evolution at slow and ultra-slow spreading mid-ocean ridges // Doct. Dissertation. Mass. Inst. Technology, Cambridge, Mass., 02139 & Woods hole ocean. Inst., Woods hole, Mass., 02543. 2001. 254 p.

9. Cannat M., Rommevaux-Jestin C., Sauter D., Deplus C., Mendel. V. Formation of the axial relief at the very slow spreading Southwest Indian Ridge (49° to 69°E) // J. Geophys. Res., v. 104, 1999. P.22825-22843.

10. Anderson, R. N., Langseth M. G., Sclater J. G. The mechanisms of heat transfer through the floor on the Indian Ocean //J. Geophys. Res., v.82, 1977, P.3391-3409.

11. Anderson, R. N., Langseth M. G., Hobart M. A. Geothermal convection through oceanic crust and sediments in the Indian Ocean //Science, 204, 828832, 1979.

12. Courtney, R. C., Recq M., Anomalous heat flow near the Crozet Plateau and mantle convection //Earth Planet. Sci. Lett., v.79, 1986. 373-384.

13. Pollack, H. N., Hurter S. J., Johnston J. R. Global heat flow data set //World Data Center A for Solid Earth Geophysics, NOAA E/GCI, 325 Broadway, Boulder, CO 80303, USA, 1992.

14. Podgornykh L.V., Khutorskoj M.D. Planetarnyj teplovoj potok (Karta masshtaba 1: 30 000 000 i ob'yasnitel'naya zapiska k nej.)// Moskva-Sankt Peterburg, Orgservis LTD, 1997, 65 s.

15. Hasterok D. Thermal Regime of the Continental and Oceanic Lithosphere, //Ph.D. Dissertation, University of Utah, 2010, 156 pp.

Система Orphus

Loading...
Up