The University of Southampton
University of Southampton Institutional Repository

RRS James Clark Ross Cruise 253, 26 Jul -25 Aug 2011. Arctic methane hydrates

Wright, I.C. and et al, [Unknown] (2012) RRS James Clark Ross Cruise 253, 26 Jul -25 Aug 2011. Arctic methane hydrates , Southampton, UK National Oceanography Centre Southampton 56pp. (National Oceanography Centre Cruise Report, 13).

Record type: Monograph (Project Report)


The cruise built on the successful geophysical and geochemical mapping, undertaken during the 2008 IPY voyage JCR211 (Westbrook et al., 2009) that made the first comprehensive survey of methane bubble plume venting along the western Svalbard margin. The main achievements of JCR253 included the recovery of the ESONET demonstration mission AOEM - MASOX seafloor lander (with recovery of 10 months of physical and biogeochemical parameters from a vigorous bubble plume site) and its deployment for a further 12 months at the same site (for recovery in August 2012), completion of 23 HyBIS ROV dives, totaling 35 hr. Seafloor video and photographs, were completed along transects in both 420 – 380 m and 80-90 m water-depths, but additionally HyBIS was used to sample bubble plume fluids at seafloor “vents” for geochemical analysis, and bubble imaging to measure bubble sizes and ascent rates. A suite of 14 piston / gravity cores were acquired along three transects perpendicular to both the interpreted position of the hydrate stability zone outcropping at the seafloor and general linear band of bubble plumes emitting from the seafloor around ~ 390 m. A comprehensive suite of 28 CTD stations were completed for physical / chemical sensing and water-sampling along the three transects (co-located with sediment and box cores) and the shallow-water sites. Additionally, the active acoustic bubble BOB imaging system was deployed to record active methane bubble release at a representative bubble stream at 390 m for an 18-day deployment. A major “discovery” of the cruise is the observation of active methane bubble release in shallow- ater (80-90 m water-depth) landward of the previously described edge of the hydrate stability zone outcropping near the seafloor at water-depths of 420 – 380 m.

PDF NOC_CR_13.pdf - Other
Download (18MB)

More information

Published date: May 2012
Keywords: Biogeochemistry, bubble acoustics, cruise 253 2011, CTD, Hybsis, James Clark Ross, methane hydrate, methane gas flares, microbial biology, geochemistry, piston cores, sediment cores, seafloor geology, western Svalbard continental shelf
Organisations: Marine Geoscience


Local EPrints ID: 339241
PURE UUID: 139e0389-8b87-4cc6-9ffe-445568038ee6

Catalogue record

Date deposited: 24 May 2012 13:18
Last modified: 18 Jul 2017 05:53

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.