Measurements of the fate of gas hydrates during transit through the ocean water column

被引：31

作者：

Brewer, PG ^{[1
]}

Paull, C ^{[1
]}

Peltzer, ET ^{[1
]}

Ussler, W ^{[1
]}

Rehder, G ^{[1
]}

Friederich, G ^{[1
]}

机构：

[1] Monterey Bay Aquarium Res Inst, Moss Landing, CA 95039 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2002年 / 29卷 / 22期

关键词：

D O I：

10.1029/2002GL014727

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We report on controlled experiments to document the fate of naturally occurring methane hydrate released from the sea floor (780 m, 4.3degreesC) by remotely operated vehicle (ROV) disturbance. Images of buoyant sediment-coated solids rising (similar to0.24 m/s) from the debris cloud, soon revealed clear crystals of methane hydrate as surficial material sloughed off. Decomposition and visible degassing began close to the predicted phase boundary, yet pieces initially of similar to0.10 m size easily survived transit to the surface ocean. Smaller pieces dissolved or dissociated before reaching the surface ocean, yet effectively transferred gas to depths where atmospheric ventilation times are short relative to methane oxidation rates.

引用

页码：38 / 1

页数：4

共 18 条

[1]

[Anonymous], 1997, CLATHRATE HYDRATES N

[2] Direct experiments on the ocean disposal of fossil fuel CO2 [J].

Brewer, PG ;

Friederich, C ;

Peltzer, ET ;

Orr, FM .

SCIENCE, 1999, 284 (5416) :943-945

[3] DISSOCIATION OF OCEANIC METHANE HYDRATE AS A CAUSE OF THE CARBON-ISOTOPE EXCURSION AT THE END OF THE PALEOCENE [J].

DICKENS, GR ;

ONEIL, JR ;

REA, DK ;

OWEN, RM .

PALEOCEANOGRAPHY, 1995, 10 (06) :965-971

[4]

Dillon WP, 1998, GEOL SOC SPEC PUBL, V137, P293, DOI 10.1144/GSL.SP.1998.137.01.23

[5]

HENRIET JP, 1998, GEOL SOC LONDON SPEC, V137

[6]

HOVLAND M, 1999, EOS T AGU, V80, P552

[7] The source and fate of massive carbon input during the latest Paleocene thermal maximum [J].

Katz, ME ;

Pak, DK ;

Dickens, GR ;

Miller, KG .

SCIENCE, 1999, 286 (5444) :1531-1533

[8]

Kleinberg RL, 2001, AM SCI, V89, P244, DOI 10.1511/2001.3.244

[9] GAS HYDRATES - GEOLOGICAL PERSPECTIVE AND GLOBAL CHANGE [J].

KVENVOLDEN, KA .

REVIEWS OF GEOPHYSICS, 1993, 31 (02) :173-187

[10]

MACDONALD IR, 1994, GEOLOGY, V22, P699, DOI 10.1130/0091-7613(1994)022<0699:GHTBTS>2.3.CO

← 1 2 →