Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Sudipta Sasmal"'
Autor:
Dimitrios Z. Politis, Sudipta Sasmal, Masashi Hayakawa, Haris Haralambous, Abhirup Datta, Stelios M. Potirakis
Publikováno v:
Remote Sensing, Vol 16, Iss 22, p 4162 (2024)
In this study, we present a six-year (2014–2020) statistical analysis of VLF subionospheric propagation data at 19 VLF receivers from the VLF transmitter with call name JJI and frequency 22.2 kHz, all located in Japan. Moderate and strong earthquak
Externí odkaz:
https://doaj.org/article/fe57f91fa3864b679692a76f3e2f8ac8
Publikováno v:
Geosciences, Vol 14, Iss 3, p 73 (2024)
This study examines the response of the thermal channel within the Lithosphere–Atmosphere–Ionosphere Coupling (LAIC) mechanism during the notable earthquake in Crete, Greece, on 27 September 2021. We analyze spatio-temporal profiles of Surface La
Externí odkaz:
https://doaj.org/article/21b1ef9dd583480b8358d397e6866c8f
Autor:
Dimitrios Z. Politis, Stelios M. Potirakis, Sudipta Sasmal, Filopimin Malkotsis, Dionisis Dimakos, Masashi Hayakawa
Publikováno v:
Atmosphere, Vol 14, Iss 4, p 673 (2023)
In this work, we present the analysis of VLF/LF sub-ionospheric propagation data to study anomalies possibly related to very recent strong (M > 5.5) earthquakes (EQs) that occurred in the southeastern Mediterranean in September–October 2021 and Jan
Externí odkaz:
https://doaj.org/article/ae90bc30ea3345ae8b9d152b37a285e8
Autor:
Binod Adhikari, Subodh Dahal, Monika Karki, Roshan Kumar Mishra, Ranjan Kumar Dahal, Sudipta Sasmal, Virginia Klausner
Publikováno v:
Geoenvironmental Disasters, Vol 7, Iss 1, Pp 1-16 (2020)
Abstract In this paper, we estimate the seismogenic energy during the Nepal Earthquake (25 April 2015) and studied the ground motion time-frequency characteristics in Kathmandu valley. The idea to analyze time-frequency characteristic of seismogenic
Externí odkaz:
https://doaj.org/article/1fda6298ce1e4f668941df839edb3673
Autor:
Soujan Ghosh, Suman Chakraborty, Sudipta Sasmal, Tamal Basak, Sandip K. Chakrabarti, Anjan Samanta
Publikováno v:
Geomatics, Natural Hazards & Risk, Vol 10, Iss 1, Pp 1596-1612 (2019)
We present perturbations in very low frequency (VLF) signals received at Ionospheric & Earthquake Research Centre (IERC) (Lat. 22.50N, Long. 87.48E) during and prior to two earthquakes, one on 11 March 2011 at 11:16:24 LT (M = 9) in Honshu, Japan and
Externí odkaz:
https://doaj.org/article/2b68e6216e9947128b745422b9e02f87
Autor:
Dimitrios Z. Politis, Stelios M. Potirakis, Subrata Kundu, Swati Chowdhury, Sudipta Sasmal, Masashi Hayakawa
Publikováno v:
Symmetry, Vol 14, Iss 9, p 1939 (2022)
Lithosphere–atmosphere–ionosphere coupling (LAIC) is studied through various physical or chemical quantities, obtained from different sources, which are observables of the involved complex processes. LAIC has been proposed to be achieved through
Externí odkaz:
https://doaj.org/article/605efd9a8ea64533b55616ef5648d4ce
Autor:
Soujan Ghosh, Swati Chowdhury, Subrata Kundu, Sudipta Sasmal, Dimitrios Z. Politis, Stelios M. Potirakis, Masashi Hayakawa, Suman Chakraborty, Sandip K. Chakrabarti
Publikováno v:
Entropy, Vol 24, Iss 1, p 23 (2021)
We focus on the possible thermal channel of the well-known Lithosphere–Atmosphere–Ionosphere Coupling (LAIC) mechanism to identify the behavior of thermal anomalies during and prior to strong seismic events. For this, we investigate the variation
Externí odkaz:
https://doaj.org/article/30eb03db3b184dfdb01fadf8deb20200
Autor:
Sudipta Sasmal, Swati Chowdhury, Subrata Kundu, Dimitrios Z. Politis, Stelios M. Potirakis, Georgios Balasis, Masashi Hayakawa, Sandip K. Chakrabarti
Publikováno v:
Atmosphere, Vol 12, Iss 8, p 1059 (2021)
We present a comprehensive analysis of pre-seismic anomalies as computed from the ground and space-based techniques during the recent Samos earthquake in Greece on 30 October 2020, with a magnitude M = 6.9. We proceed with a multi-parametric approach
Externí odkaz:
https://doaj.org/article/831d8bc24d2e4aaeb277d98d675837b5
Autor:
Dimitrios Z. Politis, Stelios M. Potirakis, Yiannis F. Contoyiannis, Sagardweep Biswas, Sudipta Sasmal, Masashi Hayakawa
Publikováno v:
Entropy, Vol 23, Iss 6, p 676 (2021)
In this work we present the statistical and criticality analysis of the very low frequency (VLF) sub-ionospheric propagation data recorded by a VLF/LF radio receiver which has recently been established at the University of West Attica in Athens (Gree
Externí odkaz:
https://doaj.org/article/d52dfef2c4884e329ea8a950b80f4b4b
Publikováno v:
Entropy, Vol 22, Iss 6, p 674 (2020)
In order to have further evidence of the atmospheric oscillation channel of the lithosphere-atmosphere-ionosphere coupling (LAIC), we have studied criticality in global navigation satellite system (GNSS) surface deformation as a possible agent for ex
Externí odkaz:
https://doaj.org/article/4275ce479365467488fd860b9e28c0c4