Tracer Breakthrough, Hydraulic Properties and Fracture Networks at Sub-Continuum Scales in Aquifers

At sub-continuum scales, pore network geometry strongly influences flow and solute transport. Fractures spaced ~0.1 to ~10m impart continuum scales to fractured aquifers which may exceed the size of many practical problems. Sub-continuum flow models often use statistical simulation of explicit fracture networks, leading to serious problems of system identification an uniqueness. This studentship will address this by determining whether tracer breakthrough curves may be used to characterise fracture topography at different scales, either as the sole evidence or in combination with bulk permeability. The main method will be a systematic exploration of the influence of fracture network topologies and scale on tracer breakthrough, using simulations on 2-D and 3-D models which represent the void space explicitly and create dispersion solely as a product of inhomogeneity in flow rate. Results will be compared with existing tracer data and used to infer the characteristics of the fracture networks involved. The outcome hoped for will be a methodology for using tracer tests to constrain fracture geometry in unknown cases.

Date (Creation): 2010-03-29

Citation identifier: http://data.bgs.ac.uk/id/dataHolding/13605406

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University College London	Atkinson, Professor T	not available	Principal investigator
British Geological Survey	Enquiries	enquiries@bgs.ac.uk	Distributor
British Geological Survey	Enquiries	enquiries@bgs.ac.uk	Point of contact

Maintenance and update frequency: notApplicable

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

Fluid flow
Fluid dynamics
NGDC Deposited Data
Fluid mechanics
Three dimensional models
Two dimensional models

dataCentre

NGDC Deposited Data

Keywords

NERC_DDC

Access constraints: Other restrictions

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Use constraints: 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.

Language: English

Topic category

Geoscientific information

Begin date: 2000-12

End date: 2003-12

Supplemental Information: M2m. No Data. Project report and presentation.

Reference System Information

No information provided.

Distribution format

Name	Version

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	enquiries@bgs.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://www.bgs.ac.uk/	BGS Homepage

Hierarchy level: Non geographic dataset

Other: non geographic dataset

Conformance result

Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services