Date ( Creation )

2020

Identifier

http://data.bgs.ac.uk/id/dataHolding/13607671

Maintenance and update frequency

notApplicable notApplicable

GEMET - INSPIRE themes

• Geology

BGS Thesaurus of Geosciences

• Bathymetry , Multibeam

Keywords

• NERC_DDC

Access constraints

otherRestrictions Other restrictions

Use constraints

otherRestrictions Other restrictions

Other constraints

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.

Other constraints

Either: (i) the dataset is made freely available, e.g. via the Internet, for a restricted category of use (e.g. educational use only); or (ii) the dataset has not been formally approved by BGS for access and use by external clients under licence, but its use may be permitted under alternative formal arrangements; or (iii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted in order to determine the permitted usage of the dataset. 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.

Metadata language

English English

Topic category

• Geoscientific information

Geographic identifier

PUERTO RICO TRENCH [id=906900]

 

Date ( Creation )

1979

Reference system identifier

OGP / urn:ogc:def:crs:EPSG::4326

 

Date ( Revision )

2005

Distribution format

• xml ()

• tif ()

• BAG file ()

• PDF ()

• XYZ file ()

OnLine resource

https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item137749  

Hierarchy level

dataset Dataset

Other

dataset

Statement

All hydrographic surveys were executed aboard the DSSV Pressure Drop built in 1985 (68.28 m long by 13.11 m wide), fitted with a 1° x 2° Kongsberg EM 124 multibeam echosounder (MBES). All MBES data acquisition was undertaken at a typical vessel speed of 8 knots, with a swath width typically 2-3 times water depth or ~ 15-20 km. Survey lines were spaced between 6-7 km to ensure 100% overlap over areas of interest. All raw bathymetry data were processed in QPS Qimera and gridded to 75 m using CUBE algorithms. CUBE algorithms use the surrounding depth information and advanced statistical practices to determine the best estimate of depth while simultaneously calculating the uncertainty of those estimates. The total propagated uncertainty (TPU) was calculated for each dataset.

gmd:MD_Metadata

File identifier

b0260092-164e-2590-e054-002128a47908   XML

Metadata language

English English

Hierarchy level

dataset Dataset

Date stamp

2021-01-20

Metadata standard name

UK GEMINI

Metadata standard version

2.3

Dataset URI

http://data.bgs.ac.uk/id/dataHolding/13607671