Identification

Title

QICS Data: Effect of a controlled sub-seabed release of CO2 on the biogeochemistry of shallow marine sediments, pore waters, and the overlying water (2012-2013)

Abstract

The potential for leakage of CO2 from a storage reservoir into the overlying marine sediments and into the water column and the impacts on benthic ecosystems are major challenges The potential for leakage of CO2 from a storage reservoir into the overlying marine sediments and into the water column and the impacts on benthic ecosystems are major challenges associated with Carbon Capture and Storage (CCS) in subseafloor reservoirs. To investigate the consequences of CO2 leakage for the marine environment, a field-scale controlled CO2 release experiment was conducted in shallow, unconsolidated marine sediments. Changes of the chemical composition of the sediments, their pore waters and overlying water column were monitored before, during and up to 1 year after the 37-day long CO2 release from May 2012 to May 2013. In particular this focused on changes in the solid phase (physical properties, major and minor elemental composition, inorganic and organic carbon content), the pore water chemical composition (cations, anions, nutrients and the carbonate system parameters total alkalinity, dissolved inorganic carbon and isotopic signature of DIC) and the water column chemical composition (oxygen, nutrients, total alkalinity and dissolved inorganic carbon). This dataset was collected by the National Oceanography Centre (NOC) under the program QICS (Quantifying and monitoring environmental impacts of geological carbon storage) which was funded by the Natural Environment Research Council (NERC), with support from the Scottish Government. The results are contained in an Excel file. QICS project website: www.bgs.ac.uk/qics/home.html. Lichtschlag et al. (2014) Effect of a controlled sub-seabed release of CO2 on the biogeochemistry of shallow marine sediments, their pore waters, and the overlying water column, http://www.sciencedirect.com/science/article/pii/S1750583614003090 (doi:10.1016/j.ijggc.2014.10.008).

Resource type

dataset

Resource locator

http://www.bgs.ac.uk/ukccs/accessions/index.html#item35609

function: download

Unique resource identifier

code

http://data.bgs.ac.uk/id/dataHolding/13606455

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Additional information source

Lichtschlag et al. (2014) Effect of a controlled sub-seabed release of CO2 on the biogeochemistry of shallow marine sediments, their pore waters, and the overlying water column, http://www.sciencedirect.com/science/article/pii/S1750583614003090 (doi:10.1016/j.ijggc.2014.10.008). QICS project website: www.bgs.ac.uk/qics/home.html.

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

originating controlled vocabulary

title

GEMET - INSPIRE themes

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Sediments

Biogeochemistry

Carbon

Environmental impact

Storage

Metals

originating controlled vocabulary

title

BGS Thesaurus of Geosciences

reference date

date type

revision

effective date

2011

Keyword set

keyword value

NERC_DDC

Geographic location

West bounding longitude

-5.4200

East bounding longitude

-5.4200

North bounding latitude

56.4900

South bounding latitude

56.4900

Extent

Extent group

authority code

title

British Geological Survey Gazetteer: OS gazetteer

reference date

date type

revision

effective date

2002

code identifying the extent

Ardmucknish Bay [id=1214829]

Temporal reference

Temporal extent

Begin position

2012-05-10

End position

2013-05-10

Dataset reference date

date type

creation

effective date

2012-05-10

Frequency of update

notApplicable

Quality and validity

Lineage

Samples of sediment, pore waters and water column were taken in 4 zones i) pre-injection, ii) during the gas injection, and iii) during 4 sampling campaigns conducted up to 1 year post-injection: Zone 1: Directly above the CO2 injection point Zone 2: 25 m away from the injection point Zone 3: 75 m away from the injection point Zone 4: 450 m away from the injection point A series of sediment cores (~20-25 cm long) were collected from the 4 zones that had different distance to the CO2 injection point. At each sampling campaign three sediment cores were collected in perspex tubes (5 cm inner diameter) from each zone and on each sampling campaign by Scuba diving and immediately transferred for processing to a temperature controlled room set to the in situ temperature (usually ~10ºC). One core was sub-sampled for solid phase sediment analyses and the remaining two cores were used for sediment pore water extraction. For solid phase analysis, the sediment cores were sliced at 2 cm depth intervals. A sub-sample (3 mL) of each section was transferred into a glass headspace vial containing 5 mL of 1 mol L-1 sodium hydroxide and crimp-sealed for methane analysis. Sub-samples for porosity and grain size were stored in pre-weighed plastic containers at 4ºC and the remainder of the sediment sample was freeze-dried for XRF analysis. Water samples were collected from onboard the research vessel Seòl Mara using a 5L Niskin bottle. Water samples were taken from 5 depths, ranging from 2 m below the sea surface to 1 m above the seafloor, with the absolute depth depending on the tidal range. Sub-samples were transferred into gas tight glass vials without headspace for DIC, TA and dissolved oxygen analyses. Additional sub-samples were frozen in plastic bottles for nutrient analyses. The major and minor element composition of the sediments was determined by X-ray fluorescence on fused glass beads for the major elements and on pellets pressed into bricks for the minor elements. Total inorganic carbon (TIC) and total carbon (TC) concentrations were measured with a CO2 coulometer equipped with an acidification module, and organic carbon (Corg) was calculated by subtracting the acid soluble fraction from the bulk carbon. Porosity was determined by mass difference between the wet sediment, and sediment dried in the oven at 60ºC for a minimum of 72 hours, assuming a sediment density of 2.6 g cm-3. Grain size was measured on the dried sediments using a Malvern Mastersize analyser after shaking the samples overnight in a 1% Calgon solution to disaggregate them. Oxygen concentrations were determined using the Winkler titration technique. DIC was measured using an infrared analyser to detect CO2 released from the sample after acidifying with 10 % H3PO4. Total alkalinity was determined by Gran titration. Cations were measured by inductively coupled plasma optical emission spectrometry and by inductively coupled plasma mass spectrometry. Anions were measured by ion exchange chromatography with 9 mmol L-1 NaCO3 as the eluent. The carbon isotopic composition of the DIC (δ13CDIC) was determined using a multiflow preparation system coupled to an continuous flow mass spectrometer. Total alkalinity was determined by titration against 0.0005 mol L-1 HCl using a mixture of methyl red and methylene blue as an indicator. Total dissolved sulphide concentrations (H2S + HS- + S2-) were determined using the diamine complexation method. Concentrations of methane were determined by gas chromatography. The data in the table is the format Dx/Dx (day relative to injection). D-6/-7: 10/11 May 2012 D13/14: 30/31 May 2012 D34/D35: 20/21 June 2012 D41/D42: 27/28 June 2012 D53/D54: 9 July/10 July 2012 D126/D127: 18/20 September 2012 D356/D357/D358: 8/9/10 May 2013

Conformity

Conformity report

specification

title

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

reference date

date type

publication

effective date

2011

degree

false

explanation

See the referenced specification

Conformity report

specification

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

reference date

date type

publication

effective date

2010-12-08

degree

false

explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Data format

name of format

.xls

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

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. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Responsible organisations

Responsible party

organisation name

National Oceanography Centre, Southampton

email address

not available

responsible party role

pointOfContact

Responsible party

organisation name

National Oceanography Centre, Southampton

email address

not available

responsible party role

principalInvestigator

Responsible party

organisation name

National Oceanography Centre, Southampton

email address

not available

responsible party role

pointOfContact

Responsible party

organisation name

National Oceanography Centre, Southampton

email address

not available

responsible party role

principalInvestigator

Responsible party

organisation name

National Oceanography Centre, Southampton

email address

not available

responsible party role

pointOfContact

Responsible party

organisation name

National Oceanography Centre, Southampton

email address

not available

responsible party role

principalInvestigator

Metadata on metadata

Metadata point of contact

organisation name

British Geological Survey

full postal address

The Lyell Centre, Research Avenue South

EDINBURGH

EH14 4AP

United Kingdom

telephone number

+44 131 667 1000

email address

enquiries@bgs.ac.uk

responsible party role

pointOfContact

Metadata date

2022-12-07

Metadata language

eng