2 research outputs found
Monitoring of Gamma Radiation Prior to Earthquakes at a Study of Lithosphere-Atmosphere-Ionosphere Coupling in Northern Tien Shan
Monitoring of radiation background in the near-surface atmosphere and of
gamma rays, geoacoustic emission, and temperature in a borehole at 40m depth,
as well as Doppler sounding on a low-inclined radio pass proceed at the Tien
Shan mountain station (3340m a.s.l.) in Northern Tien Shan with common goal to
search for seismogenic effects preceding earthquake. The flux of gamma rays in
the borehole varies negligibly between the days, and it is not influenced by
precipitations. Characteristic bay-like drops of the gamma ray flux were found
(2-8)days before the M5.0-M6.2 earthquakes. In a M4.2 earthquake event with the
5.3km epicenter distance anomalies were detected (7-10)days before the
earthquake in variation of the gamma ray flux, geoacoustic emission, and
temperature. Simultaneously with gamma rays, a disturbance was detected in the
Doppler shift of the ionospheric signal. Similarly, ionosphere disturbances
triggered by the growth of radioactivity in the near-surface atmosphere were
found at retrospective analysis of the Doppler shift data acquired after
underground nuclear explosions at the Semipalatinsk testing site. This effect
is considered from the viewpoint of the lithosphere-atmosphere-ionosphere
coupling concept
Impact of Landscape Factors on Automobile Road Deformation Patterns—A Case Study of the Almaty Mountain Road
The geography of Kazakhstan is characterized by a diverse landscape and a small population. Therefore, certain automobile roads pass through unpopulated mountain regions, where physical road diagnostics are rare or almost absent, while landscape factors continue to affect the road. However, modern geo-information approaches and remote sensing could effectively provide the road diagnostics necessary to make timely control decisions regarding a road’s design, construction, and maintenance. To justify this assumption, we researched the deformation of a mountain road near Almaty city. Open access satellite images of and meteorological archival data for the region were processed. The resulting data were compared to validate the road’s deformation triggers. Extreme weather conditions’ impacts could be identified via road destruction (nearly 40 m longitudinal cracks, 15 m short transversal cracks, and two crack networks along a 50 m road section). The remotely sensed parameters (vertical displacement velocity, slope exposure, dissections, topographic wetness index, aspect, solar radiation, SAVI, and snow melting) show the complexity of triggers of extensive road deformations. The article focuses only on open access data from remote sensing images and meteorological archives. All the resulting data are available and open for all interested parties to use