{"ob_id":7982,"uuid":"4d140042a552972ed550f394098b426a","title":"NCAVEO: River channel survey data collected on the River Test at Chilbolton Cow Common","abstract":"The Network for Calibration and Validation of EO data (NCAVEO) ground data collection programme included a series of transects on the River Test at Chilbolton Cow Common, an area of semi-natural wet grassland. The river survey was carried out on the 16th June between 11:15 and 13:15 at site Chilbolton 1 and 15:30-17:00 at Chilbolton 2, the day before the ‘golden day’ on which the airborne data were collected by the Environment Agency / Natural Environment Research Council (NERC).\r\n\r\nThe sampling strategy used was based on the desire to capture; (1) data over the range of water depths, (2) a dense and extensive sample of data to allow for bathymetric modelling of the river regions and (3) data over a broad range of substrate types to represent all varieties within the study region (e.g. from marginal vegetation to silts and to gravels). The variables recorded included: Easting; Northing; Water depth (cm); Depth to bed (cm); Surface velocity (m/s); Dominant substrate. Surface velocity was measured using a Valeport uni-directional electro-magnetic current meter (Valeport Ltd.). For more information on the collection and processing of the data please see the dataset's metadata document, in linked documentation. A video of David Spear describing the survey is available also included in the directory. ","keywords":"NCAVEO, RIVER TEST, CHILBOLTON","publicationState":"published","dataPublishedTime":"2008-10-08T08:04:14","doiPublishedTime":null,"updateFrequency":"notPlanned","status":"completed","result_field":{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/12687/?format=json","dataPath":"/neodc/ncaveo_field/data/River_Survey","oldDataPath":[],"storageLocation":"internal","storageStatus":"online","volume":9654542,"numberOfFiles":6,"fileFormat":"Data are NASA-Ames formatted"},"timePeriod":"https://catalogue.ceda.ac.uk/api/v2/times/2282/?format=json","geographicExtent":"https://catalogue.ceda.ac.uk/api/v2/bboxes/172/?format=json","nonGeographicFlag":false,"phenomena":["https://catalogue.ceda.ac.uk/api/v2/phenomona/85563/?format=json"],"dataLineage":"These data were provided to NEODC by university of Southampton, who carried out work to convert formats to NASA-Ames, and write metadata documents. The metadata documents describing the processing are archived alongside the data as PDF files.","removedDataTime":null,"removedDataReason":"","language":"English","identifier_set":["https://catalogue.ceda.ac.uk/api/v2/identifiers/5190/?format=json"],"projects":["https://catalogue.ceda.ac.uk/api/v2/projects/7827/?format=json"],"observationcollection_set":["https://catalogue.ceda.ac.uk/api/v2/observationcollections/7824/?format=json","https://catalogue.ceda.ac.uk/api/v2/observationcollections/30128/?format=json"],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/32684/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/32689/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/32686/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/32687/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/32688/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/32690/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/32683/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/32685/?format=json"],"procedureAcquisition":"https://catalogue.ceda.ac.uk/api/v2/acquisitions/7986/?format=json","procedureCompositeProcess":null,"procedureComputation":null,"permissions":[{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/2522/?format=json","useLimitation":null,"accessConstraints":null,"accessCategory":"registered","accessRoles":null,"label":"registered: None group","licenceURL":"http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/","licenceClassifications":"any"}],"discoveryKeywords":[{"ob_id":1138,"name":"NDGO0003"}]}