Results 11 to 20 of about 110,183 (135)

Meteor trail drift research based on baseline observations

open access: yesSolar-Terrestrial Physics, 2019
We analyze the results of a rare long-lived quasisymmetric ellipsoidal-annular meteor trail recorded on November 18, 2017 by two optical all-sky cameras, spaced at a distance of 150 km. The analysis is based on astrometric processing results with the use
Ivanov K.I.   +4 more
doaj   +1 more source

Computational modeling of a meteor entering atmosphere dense layers using elastoplastic approximation [PDF]

open access: yesКомпьютерные исследования и моделирование, 2013
The article contains results of modeling a meteor entering dense atmosphere layers using Galerkins method and smoother particle hydrodynamics. Numerical simulations were run using experimental data gathered for the Chelyabinsk meteor while varying the
A. V. Shevtsov   +3 more
doaj   +1 more source

An Algorithmic Approach for Detecting Bolides with the Geostationary Lightning Mapper

open access: yesSensors, 2019
The Geostationary Lightning Mapper (GLM) instrument onboard the GOES 16 and 17 satellites can be used to detect bolides in the atmosphere. This capacity is unique because GLM provides semi-global, continuous coverage and releases its measurements ...
Clemens M. Rumpf   +4 more
doaj   +1 more source

Rock art and archaeoastronomy in Morocco: preliminary observations [PDF]

open access: yesArchaeoastronomy and Ancient Technologies, 2018
The purpose of this paper is to make public the exceptional discovery in the province of Essaouira (Morocco) of three petroglyphs engraved with an original subject in Moroccan rock art.
Ibhi,A.   +4 more
doaj   +1 more source

Distribution Characteristics of Meteor Angle of Arrival in Mohe and Wuhan, China

open access: yesAtmosphere, 2023
Meteor radar is one of the key tools for studying the atmospheric dynamics in the mesosphere and lower thermosphere. The physical parameters obtained by meteor radar inversion can provide important statistical information for research.
Xiaoyong Du   +12 more
doaj   +1 more source

Solar Cycle and Long‐Term Trends in the Observed Peak of the Meteor Altitude Distributions by Meteor Radars

open access: yesGeophysical Research Letters, 2023
The mesosphere/lower thermosphere (MLT, 80–100 km) region is an important boundary between Earth's atmosphere below and space above and may act as a sensitive indicator for anthropogenic climate change.
E. C. M. Dawkins   +19 more
doaj   +1 more source

Ozone Measurements with Meteors: A Revisit [PDF]

open access: yes, 2017
Understanding the role of ozone in the Mesosphere/Lower Thermosphere (MLT) region is essential for understanding the atmospheric processes in the upper atmosphere.
Han, Summer Xia, Ye, Quan-Zhi
core   +2 more sources

PRECIPITATION RESEARCH IN THE MOLDOVA RIVER UPPER BASIN [PDF]

open access: yesAerul şi Apa: Componente ale Mediului, 2016
One of the very important parameters for the optimal growth and development of vegetation is precipitation. In the Moldova River upper basin no recent studies have been conducted on the climatic elements that are important for living organisms and human ...
MIHĂILESCU MIHAI-CĂTĂLIN, ILIE NICU
doaj   +1 more source

First results of optical meteor and meteor trail irregularity from simultaneous Sanya radar and video observations

open access: yesEarth and Planetary Physics, 2018
Meteoroids entering the Earth's atmosphere can create meteor trail irregularity seriously disturbing the background ionosphere. Although numerous observations of meteor trail irregularities were performed with VHF/UHF coherent scatter radars in the past,
GuoZhu Li   +6 more
doaj   +1 more source

The Geminid meteor shower during the ECOMA sounding rocket campaign: specular and head echo radar observations [PDF]

open access: yesAnnales Geophysicae, 2013
The ECOMA (Existence of Charge state Of meteoric smoke particles in the Middle Atmosphere) sounding rocket campaign was conducted during the Geminid meteor shower in December 2010 in order to explore whether there is a change of the properties of ...
G. Stober   +6 more
doaj   +1 more source

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