The alkali reserve of interstitial water at the sites of methane emission in the Sea of Okhotsk

Authors
Tishchenko, PY Pavlova, GY Suess, E Nedashkovskii, AP Domeier, B Greinert, I
Citation
Py. Tishchenko et al., The alkali reserve of interstitial water at the sites of methane emission in the Sea of Okhotsk, GEOCHEM INT, 39(6), 2001, pp. 597-603
Citations number
16
Categorie Soggetti
Earth Sciences
Journal title
GEOCHEMISTRY INTERNATIONAL
ISSN journal
00167029 → ACNP
Volume
39
Issue
6
Year of publication
2001
Pages
597 - 603
Database
ISI
SICI code
0016-7029(200106)39:6<597:TAROIW>2.0.ZU;2-M
Abstract
The chemical composition (alkalinity, pH, NH4+, PO43-, Si, H2S, Cl-, Ca2+, and SO42-) of interstitial water was studied in the sediments of the Sea of Okhotsk at sites of methane emission. Variations in alkalinity were observ ed in the sediments from a typical seawater value (2.3 mM/kg) to 63 mM/kg. It is demonstrated that they are caused by the processes of sulfate reducti on and methane generation. Based on the balance relationships, an equation was constructed connecting changes in alkalinity with variations of Ca2+, S O42- and NH4+ in interstitial solutions.