17 publication(s) trouvée(s)
Article scientifique
Did magmatism of the Central Atlantic Magmatic Province (CAMP) extend to the proto-Cameroon Line in the Gulf of Guinea (West/Central Africa)?
Abstract Pre-Gondwana breakup configurations suggest that the Borborema Province of Northeast Brazil and the areas of present-day Gulf of Guinea …
Article scientifique
Determination of present-day crustal deformation along the Kenyan rift system using InSAR
Abstract The Kenyan rift system is prone to deformation due to various geological processes and human activities, such as overexploitation …
Article scientifique
Space weather impacts on the ionosphere over the southern African mid-latitude region
Abstract The ionosphere suffers major perturbations during severe space weather events such as Coronal Mass Ejections (CMEs), solar flares, high-speed …
Article scientifique
Analysis of ionospheric storm-time effects over the East African sector during the 17 March 2013 and 2015 geomagnetic storms
Abstract An analysis of the mechanisms that caused the storm-time effects during two geomagnetic storms that occurred on 17 March …
Article scientifique
Mapping of major tectonic lineaments across Cameroon using potential field data
Abstract The cartography of lineaments across a territory can be optimized using geophysical potential field data. In this study, land …
Article scientifique
A regional geomagnetic field model over Southern Africa derived with harmonic splines from Swarm satellite and ground-based data recorded between 2014 and 2019
Abstract A regional harmonic spline geomagnetic main field model, Southern Africa Core Field Model (SACFM-3), is derived from Swarm satellite …
Article scientifique
Variations of the peak positions in the longitudinal profile of noon-time equatorial electrojet
Abstract In this study, the seasonal variations of the EEJ longitudinal profiles were examined based on the full CHAMP satellite …
Article scientifique
Ionospheric irregularities and scintillations: a direct comparison of in situ density observations with ground-based L-band receivers
Abstract Ionospheric irregularities can affect satellite communication and navigation by causing scintillations of radio signals. The scintillations are routinely measured …
Article scientifique
Survey of conditions for artificial aurora experiments by the second electron gyro-harmonic at EISCAT Tromsø using dynasonde data
We report a brief survey of matching conditions for artificial aurora optical experiments utilizing the second electron gyro-harmonic (2.7-MHz frequency) …
Article scientifique
Survey of conditions for artificial aurora experiments at EISCAT Tromsø using dynasonde data
We report a brief survey on conditions for artificial aurora optical experiments in F region heating with O-mode at the …
Article scientifique
Validation of gravity data from the geopotential field model for subsurface investigation of the Cameroon Volcanic Line (Western Africa)
Belonging to the Cameroon Volcanic Line (CVL), the western part of Cameroon is an active volcanic zone with volcanic eruptions …
Article scientifique
A harmonic spline magnetic main field model for Southern Africa combining ground and satellite data to describe the evolution of the South Atlantic Anomaly in this region between 2005 and 2010
CHAMP satellite and relatively densely spaced ground-based data measured over southern Africa between 2005 and 2010 are combined in a …
Article scientifique
Evaluation of GOCE-based global gravity field models over Japan after the full mission using free-air gravity anomalies and geoid undulations
The performance of Gravity field and steady-state Ocean Circulation Explorer (GOCE) global gravity field models (GGMs), at the end of …
Article scientifique
V S30, slope, H 800 and f 0: performance of various site-condition proxies in reducing ground-motion aleatory variability and predicting nonlinear site response
The aim of this paper is to investigate the ability of various site-condition proxies (SCPs) to reduce ground-motion aleatory variability …
Article scientifique
Deriving amplification factors from simple site parameters using generalized regression neural networks: implications for relevant site proxies
Most modern seismic codes account for site effects using an amplification factor (AF) that modifies the rock acceleration response spectra …
Article scientifique
Statistical evaluation of global geomagnetic field models over Southern Africa during 2015
Global geomagnetic field models using spherical harmonic basis functions are important in space physics research, space weather and applications like …
Article scientifique
Special issue “The 2015 Gorkha, Nepal, earthquake and Himalayan studies: First results”