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A geophone wireless sensor network for investigating glacier stick-slip motion

A geophone wireless sensor network for investigating glacier stick-slip motion
A geophone wireless sensor network for investigating glacier stick-slip motion
We have developed an innovative passive borehole geophone system, as part of a wireless environmental sensor network to investigate glacier stick-slip motion. The new geophone nodes use an ARM Cortex-M3 processor with a low power design capable of running on battery power while embedded in the ice. Only data from seismic events was stored, held temporarily on a micro-SD card until they were retrieved by systems on the glacier surface which are connected to the internet. The sampling rates, detection and filtering levels were determined from a field trial using a standard commercial passive seismic system. The new system was installed on the Skalafellsjökull glacier in Iceland and provided encouraging results. The results showed that there was a relationship between surface melt water production and seismic event (ice quakes), and these occurred on a pattern related to the glacier surface melt-water controlled velocity changes (stick-slip motion). Three types of seismic events were identified, which were interpreted to reflect a pattern of till deformation (Type A), basal sliding (Type B) and hydraulic transience (Type C) associated with stick-slip motion.
Environmental sensor network, Glacier velocity, Geophones
0098-3004
103-112
Martinez, Kirk
5f711898-20fc-410e-a007-837d8c57cb18
Hart, Jane K.
e949a885-7b26-4544-9e15-32ba6f87e49a
Basford, Philip J.
efd8fbec-4a5f-4914-bf29-885b7f4677a7
Bragg, Graeme
b5fd19b9-1a51-470b-a226-2d4dd5ff447a
Ward, Tyler
46cd6c5f-7c40-42cc-90f9-b6eea8638e3d
Young, David S.
05bfdb8c-9675-470a-9dcb-5af247e1b4ca
Martinez, Kirk
5f711898-20fc-410e-a007-837d8c57cb18
Hart, Jane K.
e949a885-7b26-4544-9e15-32ba6f87e49a
Basford, Philip J.
efd8fbec-4a5f-4914-bf29-885b7f4677a7
Bragg, Graeme
b5fd19b9-1a51-470b-a226-2d4dd5ff447a
Ward, Tyler
46cd6c5f-7c40-42cc-90f9-b6eea8638e3d
Young, David S.
05bfdb8c-9675-470a-9dcb-5af247e1b4ca

Martinez, Kirk, Hart, Jane K., Basford, Philip J., Bragg, Graeme, Ward, Tyler and Young, David S. (2017) A geophone wireless sensor network for investigating glacier stick-slip motion. Computers & Geosciences, 105, 103-112.

Record type: Article

Abstract

We have developed an innovative passive borehole geophone system, as part of a wireless environmental sensor network to investigate glacier stick-slip motion. The new geophone nodes use an ARM Cortex-M3 processor with a low power design capable of running on battery power while embedded in the ice. Only data from seismic events was stored, held temporarily on a micro-SD card until they were retrieved by systems on the glacier surface which are connected to the internet. The sampling rates, detection and filtering levels were determined from a field trial using a standard commercial passive seismic system. The new system was installed on the Skalafellsjökull glacier in Iceland and provided encouraging results. The results showed that there was a relationship between surface melt water production and seismic event (ice quakes), and these occurred on a pattern related to the glacier surface melt-water controlled velocity changes (stick-slip motion). Three types of seismic events were identified, which were interpreted to reflect a pattern of till deformation (Type A), basal sliding (Type B) and hydraulic transience (Type C) associated with stick-slip motion.

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More information

Accepted/In Press date: 8 May 2017
e-pub ahead of print date: 10 May 2017
Published date: August 2017
Keywords: Environmental sensor network, Glacier velocity, Geophones

Identifiers

Local EPrints ID: 412213
URI: https://eprints.soton.ac.uk/id/eprint/412213
ISSN: 0098-3004
PURE UUID: 46407995-d18d-4123-a7aa-a82e974d0ebb
ORCID for Kirk Martinez: ORCID iD orcid.org/0000-0003-3859-5700
ORCID for Jane K. Hart: ORCID iD orcid.org/0000-0002-2348-3944
ORCID for Philip J. Basford: ORCID iD orcid.org/0000-0001-6058-8270
ORCID for Graeme Bragg: ORCID iD orcid.org/0000-0002-5201-7977

Catalogue record

Date deposited: 13 Jul 2017 16:32
Last modified: 06 Jun 2018 13:13

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Contributors

Author: Kirk Martinez ORCID iD
Author: Jane K. Hart ORCID iD
Author: Graeme Bragg ORCID iD
Author: Tyler Ward
Author: David S. Young

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