QICS Paper: Benthic megafauna and CO2 bubble dynamics observed by underwater photography during a controlled sub-seabed release of CO2

In 2012, a controlled sub-seabed release of carbon dioxide (CO2) was conducted in Ardmucknish Bay, a shallow (12 m) coastal bay on the west coast of Scotland. During the experiment, CO2 gas was released 12 m below the seabed for 37 days, causing significant disruption to sediment and water carbonate chemistry as the gas passed up through the sediment and into the overlying water. One of the aims of the study was to investigate how the impacts caused by leakage from geological CO2 Capture and Storage (CCS) could be detected and quantified in the context of natural heterogeneity and dynamics. To do this underwater photography was used to analyze (i) the benthic megafaunal response to the CO2 release and (ii) the dynamics of the CO2 bubble streams, emerging from the seabed into the overlying water column. The frequently observed megafauna species in the study area were Virgularia mirabilis (Cnidaria), Turritella communis (Mollusca), Asterias rubens (Echinodermata), Pagurus bernhardus (Crustacea), Liocarcinus depurator (Crustacea), and Gadus morhua (Osteichthyes). No discernable abnormal behavior was observed for these megafauna, in any of the zones investigated, during or after the CO2 release. Time-lapse photography revealed that the intensity and presence of the CO2 bubble plume was affected by the tides, with the most active bubbling seen at low tides and the larger hydrostatic pressure at high tide suppressing CO2 bubbling from the seabed. This is a publication in QICS Special Issue - International Journal of Greenhouse Gas Control, Jun Kita et. al. Doi:10.1016/j.ijggc.2014.11.012.

Date (Publication): 2014-12-19

Citation identifier: http://data.bgs.ac.uk/id/dataHolding/13606654

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Research Institute of Innovative Technology for the Earth, Japan	Jun Kita	not available	Point of contact
Research Institute of Innovative Technology for the Earth, Japan	Jun Kita	not available	Principal investigator

Maintenance and update frequency: notApplicable

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

Carbon capture and storage
UKCCS
NGDC Deposited Data

dataCentre

Keywords

NERC_DDC

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Use constraints: Other restrictions

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Language: English

Topic category

Geoscientific information

Begin date: 2010-05 After

End date: 2014-12-29 Before

Supplemental Information: NERC grant NE/H013962/1

Reference System Information

No information provided.

Distribution format

Name	Version

OnLine resource

Protocol	Linkage	Name
	http://www.sciencedirect.com/science/article/pii/S175058361400348X

OnLine resource

Protocol	Linkage	Name
	http://www.bgs.ac.uk/ukccs/accessions/index.html#item78189

Hierarchy level: Non geographic dataset

Other: non geographic dataset

Conformance result

Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services