Date ( Creation )

2021-02-16

Identifier

http://data.bgs.ac.uk/id/dataHolding/13607729

Maintenance and update frequency

notApplicable notApplicable

GEMET - INSPIRE themes

• Geology

BGS Thesaurus of Geosciences

• Ignimbrite , Volcanic tuff , Acoustic emission , Cohesion , X ray microscopy , Seismicity , Deformation (materials)

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

Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Metadata language

English English

Topic category

• Geoscientific information

Distribution format

• ATF files ()

• MATLAB files ()

• tiff ()

• text document ()

OnLine resource

Data  

OnLine resource

Associated Paper  

OnLine resource

Digital Object Identifier (DOI)  

Hierarchy level

nonGeographicDataset Non geographic dataset

Other

non geographic dataset

Statement

Rock samples gathered from Naples area (40°53'29.42"N, 14° 6'25.74"E) Samples prepared by coring and grinding. Before and after deformation the samples were scanned by X-Ray microscope to form the computed tomography datasets. The deformation experiments were run using a digital control system on a Sanchez triaxial deformation cell. The pressure and linear deformation transducer readings, pump volume and flow-rate data, and calculated derived values are logged automatically by the control software. Simultaneously with the deformation, an acoustic emission logging system records triggering P-wave events across the sample, and logs each event as a separate 10 MHz stream of recoded voltages, with a separate record from each of the 12 sensors arranged around the sample. The trigger threshold for recording an event is set above the ambient electrical noise in the system. Each event is then processed using the included MatLab scripts to generate spectrograms of the frequency composition.

gmd:MD_Metadata

File identifier

bfdbd548-7884-3ee6-e054-002128a47908   XML

Metadata language

English English

Hierarchy level

nonGeographicDataset Non geographic dataset

Hierarchy level name

non geographic dataset

Date stamp

2021-08-02

Metadata standard version

2.3

Dataset URI

http://data.bgs.ac.uk/id/dataHolding/13607729