Results 41 to 50 of about 35,359 (303)

Limb sounders tracking topographic gravity wave activity from the stratosphere to the ionosphere around midlatitude Andes [PDF]

open access: yes, 2015
Several studies have shown that the surroundings of the highest Andes mountains at midlatitudes in the Southern Hemisphere exhibit gravity waves (GWs) generated by diverse sources which may traverse the troposphere and then penetrate the upper layers if ...
Alexander   +41 more
core   +1 more source

Evaluation of radio-wave method of soil massif

open access: yesГеофизический журнал, 2014
Analysis of theoretical results given in the paper of S. T. Maklovich and Yu. N. Kozulin "On energy propagation of electromagnetic field from dipole source in presence of conducting halfspace" has been proposed. On the base of an assumption of similarity
A.M. Kudelya
doaj   +1 more source

Mathematical description of imaging processes in ultra-wideband active aperture synthesis systems using stochastic sounding signals

open access: yesРадіоелектронні і комп'ютерні системи, 2021
Mathematical models of the fields of stochastic ultra-wideband signals that are necessary for solving problems of aperture synthesis of images using active radar methods are presented.
Valeriy Volosyuk   +6 more
doaj   +1 more source

Observations of ionospheric disturbances via U-shaped traces on ionograms

open access: yesГеодинамика и тектонофизика, 2019
The ionospheric vertical sounding is a basic technique for studying the Earth’s ionosphere. Taking into account the fact that conditions for propagation of radio waves depend on the operating frequency, diagnostics of the ionosphere is performed using ...
O. A. Laryunin
doaj   +1 more source

Profiling water vapor mixing ratios in Finland by means of a Raman lidar, a satellite and a model [PDF]

open access: yesAtmospheric Measurement Techniques, 2017
We present tropospheric water vapor profiles measured with a Raman lidar during three field campaigns held in Finland. Co-located radio soundings are available throughout the period for the calibration of the lidar signals.
M. Filioglou   +11 more
doaj   +1 more source

Observation of the structure of the urban boundary layer with different ceilometers and validation by RASS data

open access: yesMeteorologische Zeitschrift, 2009
Urban air quality assessment requires the knowledge of the temporal and spatial structure of the mixing layer, because this structure controls the vertical dilution of near-surface pollutants.
Stefan Emeis   +2 more
doaj   +1 more source

The shock-acoustic waves generated by earthquakes [PDF]

open access: yes, 2000
We investigate the form and dynamics of shock-acoustic waves generated by earthquakes. We use the method for detecting and locating the sources of ionospheric impulsive disturbances, based on using data from a global network of receivers of the GPS ...
Afraimovich, E. L.   +3 more
core   +4 more sources

Application of an optimal estimation inverse method to GPS/MET bending angle observations [PDF]

open access: yes, 2001
Palmer et al. [2000] describes an optimal estimation inverse method for radio occultation (RO) bending angle measurements to retrieve simultaneously temperature, humidity, and surface pressure; outlines quality control procedures for retrieved profiles ...
Ahmad   +19 more
core   +1 more source

Developing evidence‐based, cost‐effective P4 cancer medicine for driving innovation in prevention, therapeutics, patient care and reducing healthcare inequalities

open access: yesMolecular Oncology, EarlyView.
The cancer problem is increasing globally with projections up to the year 2050 showing unfavourable outcomes in terms of incidence and cancer‐related deaths. The main challenges are prevention, improved therapeutics resulting in increased cure rates and enhanced health‐related quality of life.
Ulrik Ringborg   +43 more
wiley   +1 more source

Оценка эффективности прогноза землетрясений в Камчатском регионе по комплексу ионосферных аномалий

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2022
Существует прямая зависимость между солнечной активностью и процессами в магнитосфере, ионосфере и литосфере Земли. Однако существует и обратная связь, определяющая влияние литосферных процессов сейсмоактивных регионов на физические процессы, протекающие
Богданов, В.В.   +1 more
doaj   +1 more source

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