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This dataset includes two cruises of data collected to investigate Arctic hydrate dissociation as a consequence of climate change and to determine vulnerable methane reservoir and gas escape mechanisms. Work during both JR269A and JR269B was focused on two separate geographical areas. The first of these was west of Prins Karls Forland, in water depths of between 150 and 1200 m. At its landward end, this survey area crosses a region at water depths up to 400 m where a dense concentration of methane escape bubble plumes occur. The second survey area straddles the summit of the Vestnesa Ridge, in water depths of 1180 to 1400 m, and is also the site of methane escape bubble plumes within the water column and of fluid escape chimneys and pockmarks previously imaged at and beneath the sea bed. This area lies approximately 100 km west of the mouth of Kongsfjorden. Data collection took place between August 2011 and July 2012. The research expedition used a deep-towed, very high resolution seismic system to image the small-scale structures that convey gas to the seabed and to detect the presence of gas in the sediments. This was done in conjunction with an electromagnetic exploration system that uses a deep-towed transmitter and receivers on the seabed to derive the variations in electrical resistivity in the sediments beneath the seabed. The observations carried out on the two cruises included; underway, meteorological observations and echo sounder data, multichannel seismic reflection profiling data, wide angle seismic survey data, and ocean bottom seismometer (OBS) data, ocean bottom electro-magnetometer data and controlled source electromagnetic surveys (CSEM). The overall objectives of the project were to determine the spatial distribution of gas and hydrate accumulations beneath the sea bed; to investigate and understand gas transport and escape mechanisms, their spatial distribution, and the controls on these; and to quantify gas and hydrate saturation values in situ within the pore spaces of the shallow sediment reservoirs. The research is focused on specific areas where significant accumulations of methane hydrate and active methane venting through the sea floor were observed and documented during the earlier JR211 cruise in 2008. This is a NERC funded project hosted by University of Southampton. The data held at BODC include multichannel seismic reflection, TOPAS sub-bottom profiler and 2D seismic reflection data in SEG-Y format. No further data are expected.
British Oceanographic Data Centre
Data are freely available to all following agreement to the terms and conditions of a Data Licence
| Other details | ||
| Internal code | Internally assigned metadata identifier | 1563 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | Arctic Ocean Hydrate Dissociation Study 2011/12 |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | British Oceanographic Data Centre record 1048ArcticHydrate2011-12 |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | 4e9b5cc6e2d15d7a81a26abeed3de275 |
| Resource Identifier | This is the code assigned by the data owner. | EDMED6624 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2011-08-27 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2012-07-24 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | inapplicable |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | asNeeded |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | This dataset includes two cruises of data collected to investigate Arctic hydrate dissociation as a consequence of climate change and to determine vulnerable methane reservoir and gas escape mechanisms. Work during both JR269A and JR269B was focused on two separate geographical areas. The first of these was west of Prins Karls Forland, in water depths of between 150 and 1200 m. At its landward end, this survey area crosses a region at water depths up to 400 m where a dense concentration of methane escape bubble plumes occur. The second survey area straddles the summit of the Vestnesa Ridge, in water depths of 1180 to 1400 m, and is also the site of methane escape bubble plumes within the water column and of fluid escape chimneys and pockmarks previously imaged at and beneath the sea bed. This area lies approximately 100 km west of the mouth of Kongsfjorden. Data collection took place between August 2011 and July 2012. The research expedition used a deep-towed, very high resolution seismic system to image the small-scale structures that convey gas to the seabed and to detect the presence of gas in the sediments. This was done in conjunction with an electromagnetic exploration system that uses a deep-towed transmitter and receivers on the seabed to derive the variations in electrical resistivity in the sediments beneath the seabed. The observations carried out on the two cruises included; underway, meteorological observations and echo sounder data, multichannel seismic reflection profiling data, wide angle seismic survey data, and ocean bottom seismometer (OBS) data, ocean bottom electro-magnetometer data and controlled source electromagnetic surveys (CSEM). The overall objectives of the project were to determine the spatial distribution of gas and hydrate accumulations beneath the sea bed; to investigate and understand gas transport and escape mechanisms, their spatial distribution, and the controls on these; and to quantify gas and hydrate saturation values in situ within the pore spaces of the shallow sediment reservoirs. The research is focused on specific areas where significant accumulations of methane hydrate and active methane venting through the sea floor were observed and documented during the earlier JR211 cruise in 2008. This is a NERC funded project hosted by University of Southampton. The data held at BODC include multichannel seismic reflection, TOPAS sub-bottom profiler and 2D seismic reflection data in SEG-Y format. No further data are expected. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | This dataset was created by the organisations with the "originator" role in this metadata record following their in-house data processing and quality control procedures. The data were then provided to the British Oceanographic Data Centre (BODC) for ingestion into one of the schemas of the National Oceanographic Database (NODB). During ingestion BODC undertake quality control, documentation and metadata enhancement procedures appropriate to the type of data. For an overview please see http://www.bodc.ac.uk/about/information_technology/data_processing_steps/. BODC supply full information about data collection, data processing and data quality with all data requests to enable users to assess data suitability themselves. Instrument(s) used to collect data: single-channel seismic reflection systems; >2000 Hz top-bandwidth sub-bottom penetrator and mud profiler systems; airgun. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Natural Environment Research Council Designated Data Centres |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | unknown | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Two-dimensional seismic reflection | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Seismic reflection | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Geology | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 79.0833 |
| East | The eastern-most limit of the data resource in decimal degrees | 16 |
| South | The southern-most limit of the data resource in decimal degrees | 78.5 |
| West | The western-most limit of the data resource in decimal degrees | 6 |
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | British Antarctic Survey | |
| Individual name | Helen Peat | |
| Position name | Acting Head of the UK Polar Data Centre | |
| Delivery point | High Cross, Madingley Road | |
| Postal code | CB3 OET | |
| City | Cambridge | |
| Country | United Kingdom | |
| URL | http://www.antarctica.ac.uk/about_bas/our_organisation/eid/pdc/index.php | |
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | British Oceanographic Data Centre | |
| Position name | Director | |
| Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
| Postal code | L3 5DA | |
| City | Liverpool | |
| Administrative area | Merseyside | |
| Country | United Kingdom | |
| URL | http://www.bodc.ac.uk/ | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | University of Southampton School of Ocean and Earth Science | |
| Individual name | Unknown | |
| Position name | Unknown | |
| Phone | +44 (0)23 8059 2011 | |
| Fax | +44 (0)23 8059 3059 | |
| Delivery point | National Oceanography Centre, European Way | |
| Postal code | SO14 3ZH | |
| City | Southampton | |
| Administrative area | Hampshire | |
| Country | United Kingdom | |
| URL | http://www.soes.soton.ac.uk/ | |
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | British Oceanographic Data Centre | |
| Position name | Director | |
| Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
| Postal code | L3 5DA | |
| City | Liverpool | |
| Administrative area | Merseyside | |
| Country | United Kingdom | |
| URL | http://www.bodc.ac.uk/ | |
| Resource locators | ||
| Legal limitations | Any restrictions imposed on accessing the resource. | Usage restrictions are specified in the terms of the licence |
| Dataset constraints | ||
| Access constraints (code) | ISO restriction code chosen from ISO 19115-1 Codelist | otherRestrictions |
| Use constraints (code) | ISO restriction name chosen from ISO 19115-1 Codelist | otherRestrictions |
| Use constraints | Any restriction on the use of the resource such as the need to agree to certain licence conditions. | Data are freely available to all following agreement to the terms and conditions of a Data Licence |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2018-02-06 |
| Date of last revision | The most recent date that the resource was revised. | 2017-09-29 |
| Date of creation | The date that the resource was created. | 2017-09-18 |
| Metadata date | The date when the content of this metadata record was last updated. | 2018-05-31 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Metadata Standard |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | Version 2.3.8 |
© OpenStreetMap contributors