Compositional variability and air-sea flux of ethane and propane in the plume of a large, marine seep field near Coal Oil Point, CA

被引：8

作者：

Mau, Susan ^{[1
,2
]}

Heintz, Monica B. ^{[1
,2
]}

Kinnaman, Franklin S. ^{[1
,2
]}

Valentine, David L. ^{[1
,2
]}

机构：

[1] Univ Calif Santa Barbara, Dept Earth Sci, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Inst Marine Sci, Santa Barbara, CA 93106 USA

来源：

GEO-MARINE LETTERS | 2010年 / 30卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

HYDROCARBON SEEPS; GAS-EXCHANGE; NATURAL-GAS; METHANE; CALIFORNIA; OXIDATION; CARBON; AREA;

D O I：

10.1007/s00367-010-0185-z

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Large quantities of methane (C1), ethane (C2), and propane (C3) emanate from shallow marine seeps near Coal Oil Point (COP), California. Concentrations of these gases were analyzed in the surface water down-current of the seep field over a 15-month period. The variable proportions of C1, C2, and C3 analyzed in gas bubbles emitted from 16 distinct seeps in the COP field encompass much of the variability found in the surface waters down-current. However, waters with disproportionate levels of C1 suggest the presence of additional C1 sources. Based on three spatial surveys, covering areas up to 280 km(2), C2 and C3 air-sea fluxes were estimated to be in the order of 3.7 and 1.4 mu mol day(-1) m(-2), respectively. Only 0.6% of C2 and 0.5% of C3 in the dissolved plume originating from the COP seep field are transferred to the atmosphere in the study area, with the fate of the remainder uncertain.

引用

页码：367 / 378

页数：12