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
103-112
Martinez, Kirk
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Hart, Jane K.
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Basford, Philip J.
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Bragg, Graeme
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Ward, Tyler
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Young, David S.
05bfdb8c-9675-470a-9dcb-5af247e1b4ca
August 2017
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, .
(doi:10.1016/j.cageo.2017.05.005).
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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geophone
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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: http://eprints.soton.ac.uk/id/eprint/412213
ISSN: 0098-3004
PURE UUID: 46407995-d18d-4123-a7aa-a82e974d0ebb
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Date deposited: 13 Jul 2017 16:32
Last modified: 16 Mar 2024 04:29
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Contributors
Author:
Kirk Martinez
Author:
Graeme Bragg
Author:
Tyler Ward
Author:
David S. Young
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