SQUIDs can be used to monitor the three vector components of the geomagnetic field to a high precision at very low frequencies, yet as they are susceptible to external interference, the accuracy to which they can track changes in the dc field over long periods has been unclear. We have carried out simultaneous measurements of the geomagnetic...
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2013 (v1)Journal articleUploaded on: December 4, 2022
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2012 (v1)Conference paper
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May 5, 2014 (v1)Conference paper
Groundwater can influence the geomagnetic field measured underground in at least two key ways. The water levels in rock will determine its electrical conductivity, and thus change the magnitude of the telluric currents induced in the rock by changing magnetic fields generated in the ionosphere. This can be studied by using multiple...
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April 2014 (v1)Conference paperSearch for a geomagnetic signal produced by the movement of groundwater in fractured carbonate rock.
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2014 (v1)Journal article
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May 5, 2014 (v1)Conference paper
Groundwater can influence the geomagnetic field measured underground in at least two key ways. The water levels in rock will determine its electrical conductivity, and thus change the magnitude of the telluric currents induced in the rock by changing magnetic fields generated in the ionosphere. This can be studied by using multiple...
Uploaded on: February 22, 2023 -
April 2012 (v1)Conference paper
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2002 (v1)Conference paper
The former underground lauching control room 1 of the ground based component of the french nuclear missile system has been decommissioned. This installation has been designed and built to remain operational even in case of a near-by nuclear blast. As a result it is robust to radioactive clouds, thermal and mechanical waves as well as...
Uploaded on: October 25, 2024 -
2003 (v1)Journal article
Since the decommission of the underground launching control room of the ground-based component of the French nuclear missile system, the whole installation has been turned into a cross-disciplinary underground laboratory. The LSBB is a unique low-noise underground laboratory because of its initial military conception and its location in the...
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2010 (v1)Journal article
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2009 (v1)Journal article
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November 2010 (v1)Journal article
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May 2012 (v1)Conference paper
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June 11, 2010 (v1)Conference paper
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July 2009 (v1)Journal article
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February 17, 2009 (v1)Journal article
The permanent operation of a 3 axes magnetometer in the LSBB below 550 m of calcite rock is a unique system of magnetic observation: a rejection rate better than 3 fT/Hz over 40 Hz. The observation of magneto-ionosphere responses to wave emissions both at the epicentre and at their arrival at LSBB for earthquakes of magnitude larger than 3 is...
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February 17, 2009 (v1)Journal article
The permanent operation of a 3 axes magnetometer in the LSBB below 550 m of calcite rock is a unique system of magnetic observation: a rejection rate better than 3 fT/Hz over 40 Hz. The observation of magneto-ionosphere responses to wave emissions both at the epicentre and at their arrival at LSBB for earthquakes of magnitude larger than 3 is...
Uploaded on: February 22, 2023 -
May 9, 2012 (v1)Conference paper
We review the recently completed Phase II measurements of the SIMPLEproject, and briefly describe its in-progress Phase III.
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May 2012 (v1)Journal article
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April 2014 (v1)Journal article
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October 1, 2009 (v1)Journal article
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Uploaded on: December 3, 2022