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DC Field | Value | Language |
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dc.contributor.author | Bulusu, Jayashree | - |
dc.contributor.author | Arora, Kusumita | - |
dc.contributor.author | Singh, Shubham | - |
dc.contributor.author | Edara, Anusha | - |
dc.date.accessioned | 2023-08-07T07:07:28Z | - |
dc.date.available | 2023-08-07T07:07:28Z | - |
dc.date.issued | 2023 | - |
dc.identifier.citation | Natural Hazards (2023), https://doi.org/10.1007/s11069-023-05844-y | en_US |
dc.identifier.uri | http://library.iigm.res.in:8080/xmlui/handle/123456789/1716 | - |
dc.description.abstract | Variations in electric and magnetic (EM) felds were examined at two sites: Dhanachuli near the Main Boundary Thrust (MBT) and Patiyasar near the Main Central Thrust (MCT) in Kumaun Himalaya, India. Anomalous EM signatures are defned based on medium-term data recordings. The patterns of anomalous EM signatures are then linked to the occurrence of moderate earthquakes (3.5≤M≤5.0), enhanced along the MCT. The vertical component of the magnetic feld is due to microtremors prior to the earthquakes; electric felds also show positive anomalies. Surface waves due to microtemors associated with the earthquakes is refected in the polarization ratios of geomagnetic data in the Pc4 range (0.01 Hz), a few days prior to each earthquake. In the case of one earthquake, during which suitable data could be retrieved, we observe a frequency change in ULF (Pc1 range) in addition to the enhancement of the Pc4, prior to the event. | en_US |
dc.language.iso | en | en_US |
dc.subject | Electro-magnetic precursors | en_US |
dc.subject | ULF waves | en_US |
dc.subject | Geomagnetic pulsations | en_US |
dc.subject | Moderate earthquakes | en_US |
dc.title | Simultaneous electric, magnetic and ULF anomalies associated with moderate earthquakes in Kumaun Himalaya | en_US |
dc.type | Article | en_US |
Appears in Collections: | SEG_Reprints |
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File | Description | Size | Format | |
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BulusuJ_etal_NatHazards_2023.pdf Restricted Access | 4.52 MB | Adobe PDF | View/Open Request a copy |
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