Navigation Links
Are methane hydrates dissolving?
Date:8/13/2012

The average temperatures of the atmosphere are rising; the average temperatures of the oceans, too. Not only living organisms react sensititvely to these changes. The transitional zones between shallow shelf seas and the deep sea at continental slopes store a huge amount of methane hydrates in the sea bed. These specific, ice-like compounds only forms at low temperatures and under high pressure. When the water temperature directly above the sea bed rises, some of the methane hydrates could dissolve and release the previously bound methane. "This scenario incorporates two fears: Firstly that enormous amounts of this very powerful greenhouse gas will be released into the atmosphere, and secondly that the continental slopes may become unstable" explains the geophysicist Professor Christian Berndt from GEOMAR | Helmholtz Centre for Ocean Research Kiel. He is leading an expedition starting today on the German research vessel MARIA S. MERIAN which will analyse the sea off the western shore of Spitsbergen in order to find out whether the first methane hydrates in the sea bed are dissolving and what the consequences might be.

The expedition builds on research conducted by marine scientists from Kiel who worked in this area of the sea in 2008. Back then they found over 250 places where gas was escaping the sea bed. "These spots lie directly on the border of the area of stable hydrates" explains Professor Berndt. "Therefore we presume that the hydrates are dissolving from the rim inwards."

During the upcoming expedition, the scientists from Kiel will be working together with colleagues from Bremen, Switzerland, Great Britain and Norway to discover whether the gas emanation shows signs of dissolved hydrates and whether this is due to warmer sea beds.

With the help of echo sounders, researchers will seek out new gas sources in order to determine the total amount of escaping gas. With Germany's only submersible JAGO, they will closely investigate the gas outlets in up to 400 metres depth. "It is interesting for us, for example, to find out whether special microorganisms that can break down the methane before it is released in the atmosphere have settled around the outlets" explains Professor Tina Treude from GEOMAR, who will be running the microbiological work during the expedition.

Parallel to this, geophysicists, lead by Professor Sebastian Krastel from GEOMAR, will investigate the slopes under the gas outlet spots for signs of instability using acoustic and seismic methods. "The methane hydrates act like binding cement on these slopes. If they dissolve, chances are that parts of the slopes will slide", explains Professor Krastel, who focuses on marine hazards at GEOMAR.

"Overall the program on this trip is very extensive. Now let us hope that the weather will play along so that we can conduct all planned tests", says the head of the expedition Christian Berndt shortly before the departure to Iceland.

The expedition at a glance:

FS MARIA S. MERIAN journey: MSM21/4
Chief Scientist: Prof. Dr. Christian Berndt (GEOMAR)
Length of Expedition: 13.08.2012-11.09.2012
Place of Departure: Reykjavik
Research Area: West of Spitsbergen
Place of Arrival: Emden
Further Information on the GEOMAR expedition page under www.geomar.de/forschen/expeditionen


'/>"/>

Contact: Jan Steffen
jsteffen@geomar.de
Helmholtz Centre for Ocean Research Kiel (GEOMAR)
Source:Eurekalert

Related biology news :

1. Microbes make clean methane
2. Stanford-Penn State scientists use microbes to make clean methane
3. Study: Seeping Arctic methane has serious implications for Florida coastline
4. Study: Seeking Arctic methane has serious implications for Florida coastline
5. Ammonites found mini oases at ancient methane seeps
6. Mafic melts, methane seeps, 2 million waves, foreign magma, and the invisible hand
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/3/2016)... --> --> Fourth quarter 2015:   ... fourth quarter of 2014. Gross margin was 46% (32). ... Earnings per share increased to SEK 6.39 (loss: 0.49). Cash ... --> --> January to December ... 1,142% compared with 2014. Gross margin was 43% (31). ...
(Date:2/3/2016)... http://www.researchandmarkets.com/research/d8zjcd/emotion_detection ) ... "Emotion Detection and Recognition Market by Technology ... Tools (Facial Expression, Voice Recognition and Others), ... Global forecast to 2020" report to ... ) has announced the addition of the ...
(Date:2/2/2016)... 2, 2016 Checkpoint Inhibitors for Cancer ... Are you interested in the future of ... checkpoint inhibitors. Visiongain,s report gives those predictions to ... national level. Avoid falling behind in data ... and revenues those emerging cancer therapies can achieve. ...
Breaking Biology News(10 mins):
(Date:2/9/2016)... February 9, 2016 Three-Year Initiative Supports ... to Take Part in Life-Changing Camp ... designed to positively affect the lives of children born with rare ... --> SHPG ) is announcing a new initiative designed to ... well as the future of rare disease care. --> ...
(Date:2/8/2016)... Feb. 8, 2016 Should antibiotic bone cement ... products to prevent infection after standard total hip or ... at ECRI Institute have been fielding a lot lately. ... Your Bottom Line?" --> "Antibiotic ... --> While there isn,t a ...
(Date:2/8/2016)... ... 08, 2016 , ... Thomas J. Todorow has joined the ... for Corporate Services and the Chief Financial Officer at The Children’s Hospital of ... Managed Care Contracting, Supply Chain, and Investments. , Prior to joining CHOP and ...
(Date:2/8/2016)... ... February 08, 2016 , ... Franz Inc. , an ... technology, today announced the availability of AllegroGraph 6, the leading Semantic Graph Database ... Certified Technology Program (CCPT). AllegroGraph is the first Semantic Graph Database to ...
Breaking Biology Technology: