Orientation and nature of active crustal stresses determined by electromagnetic measurements in the Patagonian segment of the South America Plate

Reuther, Claus-Dieter; Moser, Elmar

doi:10.1007/s00531-007-0273-0

Cited by 17 publications

(13 citation statements)

References 51 publications

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“…3), the potential influence of an artificial source has to be considered. This implies that the receiving pattern of the Cerescope antenna is probably different from what is stated by some previous studies (Lichtenberger, 2005(Lichtenberger, , 2006aReuther and Moser, 2009). Consequently, the source of a circular pattern should be located in its centre.…”

Section: Influence Of Vlf Transmittersmentioning

confidence: 57%

“…Takahara et al, 2010) and from tens to hundreds of meters for sedimentary rocks (e.g. Reuther and Moser, 2009). …”

Section: Methodsmentioning

confidence: 99%

“…Some previous studies, which outline technical data of the Cerescope hardware in more detail, describe the antenna as most sensitive when its long axis is parallel to the propagation direction of the electromagnetic waves (Lichtenberger, 2005(Lichtenberger, , 2006aReuther and Moser, 2009) or perpendicular to the propagation direction of the waves (Greiling and Obermeyer, 2010a).…”

Section: Methodsmentioning

confidence: 99%

“…Reuther et al, 2002;Lauterbach, 2005;Lichtenberger 2005Lichtenberger , 2006aMallik et al, 2008;Reuther and Moser, 2009;Greiling and Obermeyer, 2010a). Even though some of these studies seem to have produced promising results, up to now the EMR method has not been fully accepted and has only been used by a small number of research groups.…”

Section: Fig 2 Emr Measuring Setup (A)mentioning

confidence: 99%

“…As indicated by the circular pattern of the main B EMR directions surrounding DHO38, the receiving pattern of the Cerescope antenna is not unidirectional, with the highest sensitivity for a propagation direction of the electromagnetic field parallel to its long axis, as stated by Lichtenberger (2005Lichtenberger ( , 2006a, and Reuther and Moser (2009). The Cerescope antenna has a ferrite core.…”

mentioning

confidence: 97%

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A critical discussion of the electromagnetic radiation (EMR) method to determine stress orientations within the crust

et al. 2012

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In recent years, the electromagnetic radiation (EMR) method has been used to detect faults and to determine main horizontal stress directions from variations in intensities and directional properties of electromagnetic emissions, which are assumed to be generated during micro-cracking. Based on a large data set taken from an area of about 250 000 km<sup>2</sup> in Northern Germany, Denmark, and southern Sweden with repeated measurements at one location during a time span of about 1.5 yr, the method was systematically tested. Reproducible observations of temporary changes in the signal patterns, as well as a strongly concentric spatial pattern of the main directions of the magnetic component of the EMR point to very low frequency (VLF) transmitters as the main source and hence raise serious concerns about the applicability of the method to determine recent crustal stresses. We conclude that the EMR method, at its current stage of development, does not allow determination of the main horizontal stress directions

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Section: Influence Of Vlf Transmittersmentioning

confidence: 57%

“…Takahara et al, 2010) and from tens to hundreds of meters for sedimentary rocks (e.g. Reuther and Moser, 2009). …”

Section: Methodsmentioning

confidence: 99%