Wavelet Based ULF Pulsation Index for Studying Conjugate ULF Pulsation at High Latitudes and Its Applications to Space Weather
A wavelet-based index is described in this study and applied to present geomagnetic Ultra Low Frequency (ULF) pulsations observed in Antarctica and their magnetically conjugate locations in West Greenland. The index is effective for identification of pulsation events in the Pc4-5 frequency range, wh...
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ftvirginiatec:oai:vtechworks.lib.vt.edu:10919/77539 2024-05-19T07:31:57+00:00 Wavelet Based ULF Pulsation Index for Studying Conjugate ULF Pulsation at High Latitudes and Its Applications to Space Weather Xu, Zhonghua Kim, H. Clauer, C. Robert Weimer, Daniel R. Deshpande, K. Electrical and Computer Engineering 2016-12-14 application/pdf http://hdl.handle.net/10919/77539 en eng http://hdl.handle.net/10919/77539 Xu, Z [0000-0002-3800-2162] In Copyright http://rightsstatements.org/vocab/InC/1.0/ Presentation Text 2016 ftvirginiatec 2024-05-01T01:10:20Z A wavelet-based index is described in this study and applied to present geomagnetic Ultra Low Frequency (ULF) pulsations observed in Antarctica and their magnetically conjugate locations in West Greenland. The index is effective for identification of pulsation events in the Pc4-5 frequency range, which is related to the Geomagnetically Induced Currents (GICs) shown by many researchers, and measures important characteristics of ULF pulsations in both the temporal and frequency domains. We discuss how the wavelet indices can be used to monitor geomagnetic pulsations in both hemispheres simultaneously. The wavelet analysis shows valuable information for GIC- related studies, including the spectrum, correlation, and magnitude of the geomagnetic pulsations. The comparison between conjugate locations reveals the similarities and differences of ULF pulsations in both hemispheres. Also, since the Greenland chains are located near the coastal area, while the Antarctic chains are over thousands meters of the ice-sheet on the East Antarctic plateau, inter-hemispheric comparisons of vertical magnetic field perturbations can be used to reveal how sensitive ULF pulsations are to ground conductivity. false (Extension publication?) Conference Object Antarc* Antarctic Antarctica Greenland Ice Sheet VTechWorks (VirginiaTech) |
institution |
Open Polar |
collection |
VTechWorks (VirginiaTech) |
op_collection_id |
ftvirginiatec |
language |
English |
description |
A wavelet-based index is described in this study and applied to present geomagnetic Ultra Low Frequency (ULF) pulsations observed in Antarctica and their magnetically conjugate locations in West Greenland. The index is effective for identification of pulsation events in the Pc4-5 frequency range, which is related to the Geomagnetically Induced Currents (GICs) shown by many researchers, and measures important characteristics of ULF pulsations in both the temporal and frequency domains. We discuss how the wavelet indices can be used to monitor geomagnetic pulsations in both hemispheres simultaneously. The wavelet analysis shows valuable information for GIC- related studies, including the spectrum, correlation, and magnitude of the geomagnetic pulsations. The comparison between conjugate locations reveals the similarities and differences of ULF pulsations in both hemispheres. Also, since the Greenland chains are located near the coastal area, while the Antarctic chains are over thousands meters of the ice-sheet on the East Antarctic plateau, inter-hemispheric comparisons of vertical magnetic field perturbations can be used to reveal how sensitive ULF pulsations are to ground conductivity. false (Extension publication?) |
author2 |
Electrical and Computer Engineering |
format |
Conference Object |
author |
Xu, Zhonghua Kim, H. Clauer, C. Robert Weimer, Daniel R. Deshpande, K. |
spellingShingle |
Xu, Zhonghua Kim, H. Clauer, C. Robert Weimer, Daniel R. Deshpande, K. Wavelet Based ULF Pulsation Index for Studying Conjugate ULF Pulsation at High Latitudes and Its Applications to Space Weather |
author_facet |
Xu, Zhonghua Kim, H. Clauer, C. Robert Weimer, Daniel R. Deshpande, K. |
author_sort |
Xu, Zhonghua |
title |
Wavelet Based ULF Pulsation Index for Studying Conjugate ULF Pulsation at High Latitudes and Its Applications to Space Weather |
title_short |
Wavelet Based ULF Pulsation Index for Studying Conjugate ULF Pulsation at High Latitudes and Its Applications to Space Weather |
title_full |
Wavelet Based ULF Pulsation Index for Studying Conjugate ULF Pulsation at High Latitudes and Its Applications to Space Weather |
title_fullStr |
Wavelet Based ULF Pulsation Index for Studying Conjugate ULF Pulsation at High Latitudes and Its Applications to Space Weather |
title_full_unstemmed |
Wavelet Based ULF Pulsation Index for Studying Conjugate ULF Pulsation at High Latitudes and Its Applications to Space Weather |
title_sort |
wavelet based ulf pulsation index for studying conjugate ulf pulsation at high latitudes and its applications to space weather |
publishDate |
2016 |
url |
http://hdl.handle.net/10919/77539 |
genre |
Antarc* Antarctic Antarctica Greenland Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Greenland Ice Sheet |
op_relation |
http://hdl.handle.net/10919/77539 Xu, Z [0000-0002-3800-2162] |
op_rights |
In Copyright http://rightsstatements.org/vocab/InC/1.0/ |
_version_ |
1799469855824412672 |