Ice core measurements of 14CH4 show no evidence of methane release to atmosphere from methane hydrates during a large warming event 11,600 years ago

• Main Authors: Petrenko, VV, Severinghaus, JP, Smith, AM, Riedel, K, Brook, EJ, Schaefer, H, Baggenstos, D, Harth, C, Hua, Q, Buizert, C, Schilt, A, Fain, X, Mitchell, L, Bauska, TK, Orsi, A, Weiss, RF
• Format: Conference Object
• Language: English
• Published: American Geophysical Union 2017
• Subjects: Antartica; Methane; Atmospheres; Gas hydrates; Carbon; Hydrates; Geology; Morphology; Sea bed; Geophysics; Fractures; Geological faults; Taylor Glacier; Antarc*; Antarctica; antartic*; ice core; Methane hydrate; North Atlantic
• Online Access: http://apo.ansto.gov.au/dspace/handle/10238/8719; http://abstractsearch.agu.org/meetings/2016/FM/OS44A-04.html

Marine methane hydrate destabilization has been proposed as a potentially large source of methane to the atmosphere in response to both past and future warming. We present new measurements of 14C of paleoatmospheric methane (CH4) over the Younger Dryas Preboreal (YD PB) abrupt warming event (11,600...