Zobrazeno 1 - 10
of 218
pro vyhledávání: '"P.-F. Biagi"'
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 11, Iss 6, Pp 1807-1812 (2011)
In the present work it is shown that, in accordance with the observations of the vertical sounding station "Tashkent", the critical foE-frequency of the daytime E-layer increases about one day before winter-earthquakes with magnitudes M > 5 and depth
Externí odkaz:
https://doaj.org/article/a455682c0a9a42918964ea342bd411bd
Autor:
A. Rozhnoi, M. Solovieva, O. Molchanov, P.-F. Biagi, M. Hayakawa, K. Schwingenschuh, M. Boudjada, M. Parrot
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 10, Iss 3, Pp 529-534 (2010)
Signals of two Japanese transmitters (22.2 kHz and 40 kHz) recorded on the ground VLF/LF station in Petropavlovsk-Kamchatsky and on board the DEMETER French satellite have been analyzed during a seismic activity in Japan in May–June 2008. The perio
Externí odkaz:
https://doaj.org/article/278b91feef6e4101a9a84c1e2eea1552
Autor:
E. V. Liperovskaya, V. V. Bogdanov, P.-F. Biagi, C.-V. Meister, V. A. Liperovsky, M. V. Rodkin
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 9, Iss 1, Pp 53-59 (2009)
The statistical analysis of the characteristic frequency foF2 of the Earth's ionosphere averaged over mid-day hours – from 11:00 till 17:00 h LT – is carried out. Disturbances of foF2 connected to earthquakes are considered on the background of s
Externí odkaz:
https://doaj.org/article/eefbc08017fd40aa8677d565cecadff7
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 8, Iss 6, Pp 1387-1393 (2008)
On the background of seasonal and helio-geomagnetic disturbances, disturbances of the ionization density near noon connected to earthquakes are investigated. The study is performed for some tens of earthquakes with magnitudes M>5 and depths hR=exp(M)
Externí odkaz:
https://doaj.org/article/4dc7105bda5440af9edc30c225b81fc5
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 7, Iss 5, Pp 625-628 (2007)
We analyze variations of the LF subionospheric signal amplitude and phase from JJY transmitter in Japan (F=40 kHz) received in Petropavlovsk-Kamchatsky station during seismically quiet and active periods including also periods of magnetic storms. Aft
Externí odkaz:
https://doaj.org/article/bc72d8bb3c2e4aa6ba13bb16aec8bc5a
Autor:
G. Liberati, F. Biagi, A. Nanni, M.F. Parisi, L. Barbaresi, L. Querci, S. Ceccarelli, M. Regazzi, A. Bonoli, M. Colonna
Publikováno v:
Cleaner Materials, Vol 12, Iss , Pp 100249- (2024)
A novel method for the recycling of end-of-life mattresses foam, using an AIR-LAY process which employs a bi-component fiber as a binder for the polyurethane foam, have been developed and optimized. This method permits to obtain materials with the sa
Externí odkaz:
https://doaj.org/article/36255caafd954da9ba3572246e38480e
Autor:
P. H. M. Galopeau, A. S. Maxworth, M. Y. Boudjada, H. U. Eichelberger, M. Meftah, P. F. Biagi, K. Schwingenschuh
Publikováno v:
Geoscientific Instrumentation, Methods and Data Systems, Vol 12, Pp 231-237 (2023)
Earthquakes are one of the most frequently occurring natural disasters. Many indications have been collected on the presence of seismo-ionospheric perturbations preceding such tragic phenomena. Radio techniques are the essential tools leading the det
Externí odkaz:
https://doaj.org/article/142f217d73e145aa8015bfeb2b0ba559
Autor:
Mohammed Y. Boudjada, Pier F. Biagi, Hans U. Eichelberger, Giovanni Nico, Patrick H. M. Galopeau, Anita Ermini, Maria Solovieva, Masashi Hayakawa, Helmut Lammer, Wolfgang Voller, Martin Pitterle
Publikováno v:
Remote Sensing, Vol 16, Iss 3, p 529 (2024)
We study the sub-ionospheric VLF transmitter signals recorded by the Austrian Graz station in the year 2020. Those radio signals are known to propagate in the Earth-ionosphere waveguide between the ground and lower ionosphere. The Austrian Graz facil
Externí odkaz:
https://doaj.org/article/382440d26a134e169f3dda42235387df
Autor:
Christoph Schirninger, Hans U. Eichelberger, Werner Magnes, Mohammed Y. Boudjada, Konrad Schwingenschuh, Andreas Pollinger, Bruno P. Besser, Pier F. Biagi, Maria Solovieva, Jindong Wang, Bingjun Cheng, Bin Zhou, Xuhui Shen, Magda Delva, Roland Lammegger
Publikováno v:
Remote Sensing, Vol 13, Iss 12, p 2360 (2021)
Processes and threats related to natural hazards play an important role in the evolution of the Earth and in human history. The purpose of this study is to investigate magnetic field variations measured at low Earth orbit (LEO) altitudes possibly ass
Externí odkaz:
https://doaj.org/article/acefeee415ea4640b1e58d8f9e939b2f
Publikováno v:
Natural Hazards. 106:1383-1396
In June 2014, a number of meteotsunamis were detected in the Mediterranean and Black Sea area. These meteotsunamis were initiated by a unique high-altitude dynamical system which was initially originated above Spain and traveled across the Mediterran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d088835fa12a519b17b3b428a53e6ae
https://doi.org/10.1007/s11069-020-04223-1
https://doi.org/10.1007/s11069-020-04223-1