期刊
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
卷 20, 期 11, 页码 4676-4692出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2019GC008597
关键词
superconducting rock magnetometer; deconvolution; sensor response estimate; u-channel sample; magnetic point source; paleomagnetism
资金
- Natural Environment Research Council (NERC) [CC081]
- NERC [NE/R018235/1, NE/R011281/1]
- JSPS KAKENHI [JP16H04043]
- NERC [NE/R018235/1, NE/R011281/1] Funding Source: UKRI
Pass-through superconducting rock magnetometers (SRMs) enable rapid and precise remanence measurement of continuous samples and are essential for paleomagnetic studies. Due to convolution effect of the SRM sensor response, pass-through measurements need to be deconvolved to restore accurate and high-resolution signal. A key step toward successful deconvolution is a reliable estimate of the SRM sensor response. Here, we present new tool URESPONSE for accurate SRM sensor response estimate based on measurements of a well-calibrated magnetic point source. URESONSE allows sensor response to be estimated for continuous samples with different cross-section geometry. We estimate sensor responses for an old liquid helium-cooled SRM (SRM-old) and a new liquid helium-free SRM (SRM-new) at the University of Southampton and compare remanence measurement of a u-channel on both SRMs before and after deconvolution. For each SRM, sensor response estimates based on data collected using different magnetic point source samples and/or measurement procedures generally yield small differences (std.
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