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1.
Izvestiya, Atmospheric and Oceanic Physics - A modified technique for calculating the amplitude-phase characteristics of the seasonal cycle and long-term trends in the intensity of upwelling is... 相似文献
2.
Izvestiya, Atmospheric and Oceanic Physics - Long-term trends in the sea surface temperature in the Canary upwelling zone and their causes are analyzed on the basis of satellite data from the 1980s... 相似文献
3.
A. I. Serebrennikov A. A. Valter R. I. Mashkovtsev M. Ya. Scherbakova 《Physics and Chemistry of Minerals》1982,8(4):153-157
The shock-metamorphosed quartz exhibits thermal luminescence (TL) with maxima at 365 nm, 470 nm and 610–680 nm. By electron paramagnetic resonance (EPR) analysis E1 type electron centers and hole centers have been found which originate from vacancies including those from the substitution of Al3+ and/or Fe3+, for Si4+. The EPR and TL spectra may be interpreted mainly in terms of vacancy type defects associated with dislocations in the crystal structure of quartz. 相似文献
4.
A. F. Drennov V. I. Dzhurik S. P. Serebrennikov N. N. Drennova 《Seismic Instruments》2011,47(1):57-65
The amplitude-frequency characteristics of the upper section of all permanent seismic stations in the Baikal and the Transbaikal
region were studied. These data were required to solve certain inverse seismological problems and in connection with the fact
that the accelerograms recorded at these stations are used for zoning of sections of the Baikal and the Transbaikal region.
Frequency characteristics were obtained using computational and experimental methods. Seismic and geoelectric surveys were
carried out; the data were used to obtain geophysical profiles of the upper part of the sedimentary column for most of the
seismic stations. These profiles allowed estimating the amplitude-frequency characteristics. The H/V spectral ratios were treated as an experimental way to obtain the frequency characteristics. The frequency characteristics
of the upper part of the section underneath seismic stations in the Baikal region were found for the first time. 相似文献
5.
Izvestiya, Atmospheric and Oceanic Physics - A comparative estimation of long-term trends in the intensity of the largest Pacific upwellings (California, Peru, and Chile) has been performed based... 相似文献
6.
A. F. Drennov V. I. Dzhurik S. P. Serebrennikov 《Journal of Volcanology and Seismology》2008,2(1):59-69
Two methods are discussed for determining changes in ground displacement spectra and the velocity and acceleration spectra derived from these when recorded on solidly frozen bedrock (T < ?3°C) versus epicentral distance and energy class. The first of these methods characterizes the entire epicenter field of earthquakes, while the second aims at studying possible differences between spectra in different source zones. We have found the maximum spectral level as a function of epicentral distance and energy class. The calculated spectra are compared with the available records of large earthquakes. The manner in which near and comparatively small earthquakes can be used to find ground motion spectra is shown for solidly frozen bedrock for earthquakes as large as the 15–17 energy class, as well, determination of the differences between the spectra of seismic signals due to earthquakes occurring in different source zones is performed. The results can be used both directly and for the zonation and prediction of seismic hazard within the zone of solidly frozen rock, and also for the case where the temperature regime of the frozen rock has been changed or disturbed. 相似文献
7.
V. I. Dzhurik A. F. Drennov S. P. Serebrennikov E. V. Bryzhak 《Journal of Volcanology and Seismology》2018,12(1):67-74
This study is concerned with characteristic frequencies of acceleration spectra as functions of the moment magnitude М w for crustal earthquakes in the 3 ≤ М w ≤ 6.4 range that have occurred in the Baikal Rift Zone (BRZ). The characteristic frequencies were defined as those at which maxima occur in the spectra: fSm, f1, and f2, at the 0.7Sm and 0.5Sm levels, as well as the fc2 and fc3 frequencies, which characterize the transition from the ascending branch of the spectrum (fc2) to the gently sloping branch, and the fc3 frequency, which shows the transition from the gently sloping part to the descending branch. All the characteristic frequencies move toward lower values with increasing earthquake magnitude. The resulting relationships for fc2 and fc3 were used to estimate the scaling, with the result that no similarity is present. As well, we have found no wellpronounced differences in earthquake spectra between different focal mechanism events. It was found that the slope of the low-frequency branch decreases and the high-frequency descending branch becomes flattened with increasing magnitude. 相似文献
8.
Doklady Earth Sciences - Using satellite data on the sea surface temperature since 1985 (with a resolution of 0.25° × 0.25°) and the sea surface wind since 1992 (on a grid of... 相似文献
9.
Izvestiya, Atmospheric and Oceanic Physics - The issue of long-term tendencies in the sea surface temperature (SST) in the Benguela upwelling region and their causes is examined using the daily... 相似文献
10.
A.F. Drennov V.I. Dzhurik S.P. Serebrennikov E.V. Bryzhak N.N. Drennova 《Russian Geology and Geophysics》2013,54(2):223-230
The acceleration response spectra of earthquakes with M = 4–6.5 in the southwestern part of the Baikal Rift Zone have been studied. The absorption properties of the medium and the attenuation of seismic signals in the study area were determined. Average acceleration response spectra were obtained for regional earthquakes. A comparative analysis of the acceleration response spectra was made for earthquake focal mechanisms with different senses of motion: reverse fault, reverse slip, strike slip, and oblique slip. The effect of the sense of fault motion in the seismic source on acceleration response spectra was determined. 相似文献