Some Results of Oceanological Video Monitoring

The design features of an oceanological video-monitoring system created for operational research of coastal infrasonic wave processes are described. The results obtained confirm great opportunities for its use in fundamental and applied works in various seasons. The processing of the obtained experimental data has revealed the dynamics of the wave processes starting from wind waves to diurnal tides.

     

Application of laser strainmenters to the study of earthquake physics

The paper considers possibilities of applying laser strainmeters for the study of earthquake physics. One of laser strainmeters is described. A high efficiency of using the laser strainmeters for the study of earthquakes and their precursors is shown. In records of the spaced laser strainmeters, anomalous deformations propagating from the east to the west with the speed comparable with that of migration of earthquakes were found.     

Features of the Influence of Weather Conditions on the Deformation Processes of the Upper Layer of the Earth’s Crust

Doklady Earth Sciences - The influence of the temperature and moisture content of the near-surface soil layer on variations of the barodeformation interaction of the boundary layer of the...     

Potential for Recording of Waves and Sea Level Fluctuations in the World Ocean Coastal Areas by Internet Video Analysis

Doklady Earth Sciences - This paper describes the technology for recording surface wave signals and sea level fluctuations in the coastal areas of the World Ocean based on real-time analysis of the...     

Interaction of the Atmosphere and Lithosphere in the Minute Range of Periods

Doklady Earth Sciences - The interaction between the atmosphere and the lithosphere in the minute range of periods is considered. The technique of assessment of the influence of atmospheric...     

Self-Generating Processes in the System Atmosphere–Earth’s Crust

Doklady Earth Sciences - Based on analysis of experimental data, the self-generating processes in the system atmosphere–Earth’s crust are considered, in which energy is sequentially...     

Human footprints on greenhouse gas fluxes in cryogenic ecosystems

Various human footprints on the flux of biogenic greenhouse gases from permafrost-affected soils in Arctic and boreal domains in Russia are considered. Tendencies of significant growth or suppression of soil CO₂ fluxes change across types of human impact. Overall, the human impacts increase the mean value and variance of local soil CO₂ flux. Human footprint on methane exchange between soil and atmosphere is mediated by drainage. However, all the types of human impact suppress the sources and increase sinks of methane to the land ecosystems. N₂O flux grew under the considered types of human impact. Based on the results, we suggest that human footprint on soil greenhouse gases fluxes is comparable to the effect of climate change at an annual to decadal timescales.     

Peculiarities of Generation of Infragravity Waves

The peculiarities of the generation of infragravity sea waves with the periods from 30 s to 5 minutes are identified by the processing and analysis of experimental data obtained with the laser meter of hydrosphere pressure variations in the Vityaz’ Bay (the Sea of Japan).     

Free oscillations of water level in the Posyet Gulf bays (the Sea of Japan)

The results of the experiments on the registration of hydrosphere pressure variations are analyzed. The experiments were conducted in 2011, 2012, and 2014 using the laser meter ofhydrosphere pressure variations and the laser hydrophone in some bays of the Posyet Gulf in the Sea of Japan. Basic attention is given to the wind waves and fundamental modes of free oscillations in the bays.     

The nature of terrestrial infragravitational “noise”

This paper is focused on analysis of comprehensive experimental research data on the infragravitational range of periods (from 20 s to 10–12 min) obtained by synchronous measurements of fluctuations in deformations of the Earth’s crust and atmospheric and hydrospheric pressure variations. It is established that the identified variations in the period range of 1–4 min are rarely observed in records of a laser nanobarograph and laser instrument for measuring hydrospheric pressure variations (laser hydrophone), while they are frequently observed in records of laser strainmeters at a variation period of 3–4 min. Oscillation excitation in the period ranges of 7–13 min, especially in the period ranges of 8–12 min, is largely related to atmospheric processes in the corresponding periods.