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Metadata: CTD profile data collected from the Clarion-Clipperton Zone (CCZ), Pacific Ocean during SMARTEX project expeditions JC241 (2023) and JC257 (2024)
Abstract:
Full-depth CTD profiles collected during RRS James Cook cruises JC241 and JC257 in the Clarion-Clipperton Zone (CCZ), northern equatorial Pacific Ocean, an area likely to be targeted for deep-sea mining for polymetallic nodules in 2023 (JC241) and 2024 (JC257). A Sea-Bird 911plus CTD system was used, mounted on a 24-way stainless steel rosette frame, equipped with 12 x 10-litre Niskin bottles. Too few salinity samples were collected for statistics and verification of sensor trends, therefore none were applied. Post-cruise calibration revealed a 0.00193 deg C positive offset of the temp2 (secondary) temperature sensor; this correction was applied in the final files. Scientific objectives: 1. OMCO 1979 experimental site to estimate mining impact on seabed habitats after 40 years; 2. UK-1 site to understand seasonal changes in seafloor currents and benthic boundary layer processes; 3. Mesoscale eddy structure investigation on the approach to UK1. The data were collected by scientists from the National Oceanography Centre, Southampton, UK, as part of the NERC-funded Seabed Mining And Resilience To EXperimental impact (SMARTEX) project (NE/T003537/1).
Data holder:
British Oceanographic Data Centre
| Other details | ||
| Internal code | Internally assigned metadata identifier | 8243 |
| 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. | CTD profile data collected from the Clarion-Clipperton Zone (CCZ), Pacific Ocean during SMARTEX project expeditions JC241 (2023) and JC257 (2024) |
| 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 1048_SMARTEX_CTDs |
| 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. | bccb438e93d05b37b3b97de7abb1a4d2 |
| Resource Identifier | This is the code assigned by the data owner. | EDMED7436 |
| 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 | 2023-02-04 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2024-03-21 |
| 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. | Full-depth CTD profiles collected during RRS James Cook cruises JC241 and JC257 in the Clarion-Clipperton Zone (CCZ), northern equatorial Pacific Ocean, an area likely to be targeted for deep-sea mining for polymetallic nodules in 2023 (JC241) and 2024 (JC257). A Sea-Bird 911plus CTD system was used, mounted on a 24-way stainless steel rosette frame, equipped with 12 x 10-litre Niskin bottles. Too few salinity samples were collected for statistics and verification of sensor trends, therefore none were applied. Post-cruise calibration revealed a 0.00193 deg C positive offset of the temp2 (secondary) temperature sensor; this correction was applied in the final files. Scientific objectives: 1. OMCO 1979 experimental site to estimate mining impact on seabed habitats after 40 years; 2. UK-1 site to understand seasonal changes in seafloor currents and benthic boundary layer processes; 3. Mesoscale eddy structure investigation on the approach to UK1. The data were collected by scientists from the National Oceanography Centre, Southampton, UK, as part of the NERC-funded Seabed Mining And Resilience To EXperimental impact (SMARTEX) project (NE/T003537/1). |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | This dataset was created by scientists at the Scottish Association for Marine Sciences (SAMS), following their in-house data processing and quality control procedures. The data were provided to the British Oceanographic Data Centre (BODC) for long-term archive and ingestion into the series schema of the National Oceanographic Database (NODB), and subsequently made available via the BODC Published Data Library (PDL).Instrument(s) used to collect data: CTD. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Coordinate reference systems |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Elevation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Oceanographic geographical features | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Vertical spatial coordinates | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Temperature of the water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Electrical conductivity of the water column | |
| 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 | data.gov.uk | |
| 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 | Natural Environment Research Council Designated Data Centres | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 13.9006 |
| East | The eastern-most limit of the data resource in decimal degrees | -104.7101 |
| South | The southern-most limit of the data resource in decimal degrees | 11.8178 |
| West | The western-most limit of the data resource in decimal degrees | -126.2227 |
| Regional sea | North Pacific Ocean | |
| Northeast Pacific Ocean (180W) | ||
| 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 Oceanographic Data Centre | |
| Individual name | Polly Hadziabdic | |
| Position name | Head of Enquiries | |
| Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
| Postal code | L3 5DA | |
| City | Liverpool | |
| Administrative area | Merseyside | |
| Country | United Kingdom | |
| enquiries@bodc.ac.uk | ||
| URL | https://www.bodc.ac.uk/ | |
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Scottish Association for Marine Science | |
| Individual name | Unknown | |
| Position name | Unknown | |
| Postal code | PA37 1QA | |
| City | Argyll | |
| Administrative area | Oban | |
| Country | United Kingdom | |
| laurence.mee@sams.ac.uk | ||
| URL | http://www.sams.ac.uk | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Scottish Association for Marine Science | |
| Individual name | Unknown | |
| Position name | Unknown | |
| Postal code | PA37 1QA | |
| City | Argyll | |
| Administrative area | Oban | |
| Country | United Kingdom | |
| laurence.mee@sams.ac.uk | ||
| URL | http://www.sams.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 | |
| enquiries@bodc.ac.uk | ||
| URL | https://www.bodc.ac.uk/ | |
| 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 | |
| enquiries@bodc.ac.uk | ||
| URL | https://www.bodc.ac.uk/ | |
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/3ff25347-f73c-e72b-e063-7086abc0b75b/ |
| Locator name | Name of the web resource | Published dataset - doi:10.5285/3ff25347-f73c-e72b-e063-7086abc0b75b |
| Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | download |
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | No limitations apply | |
| This states any limitations on access to the data. Multiple occurences are allowed here. One entry shall be from the INSPIRE Metadata registry and the other free text should be part of the resource `Have specific limitations`. | Data are freely available to all following agreement to the terms and conditions of a Data Licence | |
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | Usage restrictions are specified in the terms of the licence |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Delimited |
| Format in which digital data can be provided for transfer | Network Common Data Form | |
| Format in which digital data can be provided for transfer | Text or Plaintext | |
| 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. | 2026-03-13 |
| Date of last revision | The most recent date that the resource was revised. | 2026-03-13 |
| Date of creation | The date that the resource was created. | 2025-10-03 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-03-13 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.2 |