17c77398-fe1a-5485-e054-002128a47908 English nonGeographicDataset non geographic dataset British Geological Survey +44 131 667 1000 The Lyell Centre, Research Avenue South EDINBURGH LOTHIAN EH14 4AP United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-05-10 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13606648 QICS Paper: Mapping observations using AUV and numerical simulations of leaked CO2 diffusion in sub-seabed CO2 release experiment at Ardmucknish Bay 2015-02-27 publication http://data.bgs.ac.uk/id/dataHolding/13606648 A controlled sub-seabed CO2 release experiment (QICS: quantifying and monitoring potential impacts of geological carbon storage) was conducted in Ardmucknish Bay, Scotland, in 2012, to quantify the effect of leaked CO2 on marine environments. In this experiment, CO2 was injected beneath the seafloor, and closely monitored as the CO2 was allowed to leak into the overlying water column. We performed mapping observations using an autonomous underwater vehicle (AUV) equipped with sensors to monitor physical and chemical conditions in the vicinity of the CO2 leakage. We also numerically simulated the behavior of the low-pH plume caused by the CO2 leakage, within the calculated tidal current in the bay. The results of AUV mapping observations showed that physical and chemical characteristics of the water mass in Ardmucknish bay are sensitive to tidal variations (low or high tide), and the ascent speed of the leaked CO2 bubble and the pH decrease in the vicinity of the CO2 leakage area are predominantly controlled by the tidal phase in the bay. The observations using an acoustic Doppler current profiler (ADCP) installed in the AUV indicated that the current in the bay flows westwards at high tide and eastwards at low tide. The simulated tidal current agreed well with the tidal current observed by ADCP. Numerical simulation suggested that the pH decrease due to the leaked CO2 is restricted to the vicinity of the CO2 leakage area, and fluctuates greatly with tidal variations. In flood tide periods, diffusion of the low-pH plume caused by the leaked CO2 is barely detectable because low-pH seawater intrudes into the bay from the bay mouth. This is a publication in QICS Special Issue - International Journal of Greenhouse Gas Control, Yoshiaki Maeda et. al. Doi:10.1016/j.ijggc.2015.01.017. Yoshiaki Maeda Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry United Kingdom not available pointOfContact Yoshiaki Maeda Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry United Kingdom not available principalInvestigator notApplicable https://resources.bgs.ac.uk/images/geonetworkThumbs/17c77398-fe1a-5485-e054-002128a47908.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Carbon capture and storage BGS Thesaurus of Geosciences 2022 revision NGDC Deposited Data UKCCS dataCentre NERC_DDC otherRestrictions intellectualPropertyRights Either : (i) the dataset has not been formally approved by BGS for access and use by external clients under license; and / or (ii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted before the dataset can be provided to, or accessed by, BGS staff or external clients. Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant access restrictions. This staff member should revert to the IPR Section (IPR@bgs.ac.uk) for advice, should the position not be clear. otherRestrictions The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. 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Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant use restrictions. This staff member should revert to the IPR Section (ipr@bgs.ac.uk) for advice, should the position not be clear. English geoscientificInformation 2010-05 2015-02-27 https://www.sciencedirect.com/science/article/pii/S175058361500033X WWW:LINK-1.0-http--link Published as an open access journal article Doi:10.1016/j.ijggc.2015.01.017 download https://ukccs-research.org/accessions/index.html#item78172 WWW:DOWNLOAD-1.0-http--download information nonGeographicDataset non geographic dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 publication See the referenced specification false 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 2010-12-08 publication See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false See the journal publication for details