搜索结果: 1-15 共查到“地球物理学 F-region”相关记录64条 . 查询时间(0.175 秒)
Ion thermal effects on E-region instabilities: 2D kinetic simulations
E-region electrojet Ionospheric irregularities Plasma instabilities
2017/3/22
Radars frequently receive strong returns from naturally occurring plasma density irregularities centered around
100 km altitude in the atmosphere. These E-region ionospheric irregularities occur when...
Seismically active Kathmandu region in store for larger earthquake
Seismically Kathmandu region store for larger earthquake
2016/12/13
An earthquake much more powerful and damaging than last year's 7.8 magnitude quake could rock Kathmandu and the Himalayan Frontal Fault, an international team of seismic experts has concluded. The uns...
The influence of active meteorological systems on the ionospheric F-region
MCCs F-region virtual height electronic concentration
2015/10/8
Effects on the F region of two active meteorological systems will be analyzed. These systems are known as Mesoscale Convective Complexes (MCCs). Ionospheric data from a vertical sounder located in Tuc...
Magnetotelluric investigations of the seismically active region of Northwest Bohemia: preliminary results
Magnetotelluric seismic area Bohemia
2015/10/8
During 1997, within the framework of an Italian-funded scientific cooperation between Italy and the Czech Republic, a series of magnetotelluric (MT) soundings was carried out in the region of Northwes...
Mapping and interpretation of satellite magnetic anomalies from POGO data over the Antarctic region
Antarctic geomagnetic field magnetic field satellites magnetic anomalies
2015/10/8
A satellite magnetic anomaly map made using the POGO magnetic field data is compared to three maps made using Magsat data. A total of 14 anomalies with magnitudes greater than 3 nT can be identified i...
Seismic hazard assessment for Central, North and Northwest Europe: GSHAP Region 3
Seismic hazard assessment Europe earthquake UN/IDNDR seismicity
2015/9/30
The activities of the Regional Centre 3 of the Global Seismic Hazard Assessment Program (GSHAP) covering Europe north of 46°N and west of 32°E are summarized starting with the establishment of the GSH...
Seismic hazard assessment in the Ibero-Maghreb region
Seismic hazard assessment Ibero-Maghreb seismic zoning earthquake UN/IDNDR historical seismicity
2015/9/30
The contribution of the Ibero-Maghreb region to the global GSHAP map has been the result of a fruitful cooperation among the participants in the established Working Group including representatives fro...
Probabilistic seismic hazard maps for the North Balkan region
Seismic hazard map Pannonian basin Monte Carlo simulation Vrancea intermediate focus earthquake seismic hazard methodology UN/IDNDR
2015/9/29
A set of seismic hazard maps, expressed as horizontal peak ground acceleration, have been computed for a large area of Central and Eastern Europe covering the North Balkan area (Former Yugoslavia, Hun...
Space-time variations of the Umbria-Marche region instrumental seismicity
b value seismicity Apennines
2015/9/29
In the Umbria-Marche region, space and time variations concerning the b value were studied by instrumental seismicity from January 1987 to May 1999, according to the Bender method. Data were divided i...
Investigating the time dynamics of geoelectrical signals measured in two seismotectonic environments in the Mediterranean region: the Southern Apennine chain (Southern Italy) and the Hellenic arc (Crete Island, Greece)
Geoelectrical signal time dynamics extreme events earthquake prediction
2015/9/28
In this paper we explore the time dynamics of geoelectrical signals measured in two seismic active areas in the Mediterranean region: the Southern Apennine chain (Italy) and the Hellenic arc (Crete Is...
Morphology of bottom surfaces of glacier ice tongues in the East Antarctic region
radio echo sounding radio glaciology glacier ice tongues
2015/9/28
During three Antarctic summer campaigns (1995/97/99) Radio Echo Sounding (RES) system data from some glacier ice tongues in the East Antarctic regions between Victoria Land and George V Land were coll...
Properties of the main trough of the F region derived from Dynamic Explorer 2 data
ionosphere on in-situ electron density
2015/9/25
In winter and equinoctial season nights, the main trough of the F region is an important stable structure of the ionosphere at the border between mid and high latitudes. Therefore it has to be taken i...
Climatology of ionosphericF-region disturbances
ionosphere F2-layer critical frequency ionospheric disturbances
2015/9/14
After more than 60 years of research, ionospheric disturbances are today a most challenging topic of upper atmospheric
physics. Although the understanding of the thermosphere-ionosphere system has in...
The CERESIS earthquake catalogue and database of the Andean Region: background, characteristics and examples of use
historical seismicity CERESIS database South America intensity data points earthquakesource parameters
2015/9/14
The history of earthquakes in South America starts with the coming of the Spanish and Portuguese 玞onquistadores?at the beginning of the 16th century. Their chronicles, and those of local historians, a...
Planetary and gravity wave signatures in the F-region ionosphere with impacton radio propagation predictionsand variability
Radio propagation ionization
2015/9/14
The aim of this work within the WP 3.1 of the COST 271 Action is the characterization of the variability introduced in the F-region ionosphere by -Planetary Wave Signatures- (PWS) and -Gravity Wave
S...