scholarly journals The New Avalanche-Like Stochastic Model for Parameterization of Seismicity and Its Application to the South Sakhalin Island Seismicity

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
M. V. Rodkin ◽  
I. N. Tikhonov
Keyword(s):  
Stochastic Model ◽  
Hierarchical Structure ◽  
Strong Earthquake ◽  
Sakhalin Island ◽  
Seismic Process ◽  
The South ◽  
Anomalous Increase ◽  
Seismic Regime ◽  
South Sakhalin ◽  
Two Parameters

Seismic process is usually considered as an example of occurrence of the regime of self-organizing criticality (SOC). A model of seismic regime as an assemblage of randomly developing episodes of avalanche-like relaxation, occurring at a set of metastable subsystems, can be the alternative of such consideration. The model is defined by two parameters characterizing the scaling hierarchical structure of the geophysical medium and the degree of metastability of subsystems of this medium. In the assemblage, these two parameters define a modelb-value. An advantage of such approach consists in a clear physical sense of parameters of the model. The application of the model for parameterization of the seismic regime of the south part of Sakhalin Island is considered. The models of space changeability of the scaling parameter and of temporal changeability of the parameter of metastability are constructed. The anomalous increase of the parameter of metastability was found in connection with the Gornozavodsk and Nevelsk earthquakes. At the present time, high values of this parameter occur in the area of the Poyasok Isthmus. This finding is examined in comparison with other indications of an increase in probability of occurrence of a strong earthquake in the South Sakhalin region.

scholarly journals Test mode of operation network of monitoring subsoil radon in the south of Sakhalin

2018 ◽  
Vol 62 ◽  
pp. 03007
Author(s):  
Evgeny Makarov ◽  
Pavel Firstov ◽  
Dmitry Kostylev ◽  
Evgeny Rylov ◽  
Ilya Dudchenko
Keyword(s):  
Sakhalin Island ◽  
Additional Parameter ◽  
Seismic Process ◽  
The South ◽  
Test Mode ◽  
Mode Of Operation ◽  
Small Focus ◽  
Focal Zone ◽  
Radon Monitoring ◽  
Monitoring Stations

Radon monitoring in the literature is recognized as a promising method for the prediction of earthquakes. In the last decade, the promise of the radon method for predicting subduction earthquakes has been convincingly demonstrated on Kamchatka. The results obtained on the Kamchatka, give reason to hope for the detection of predictive anomalies in the radon field and for weaker, but not less dangerous, small-focus earthquakes on the Sakhalin Island. The southern part of Sakhalin Island is a region of high seismic hazard. On Sakhalin Island, in a test mode, a network of three radon monitoring stations in the subsoil air is launched using the forced convection method to search for earthquake precursors. Based on the literature data, it is assumed that the effectiveness of radon monitoring near the focal zone of small-focus earthquakes on Sakhalin Island will be significantly higher compared to the conditions of the subduction zone in Kamchatka. Data from the network of radon monitoring stations can be used as an additional parameter to substantiate the conclusions on possible scenarios for the evolution of the seismic process in the south of Sakhalin.

Lichens of swamp complexes of Sakhalin Island (Sakhalin Region, Russian Far East)

2021 ◽  
Vol 55 (2) ◽  
pp. 405-426
Author(s):  
I. F. Skirina ◽  
N. A. Tsarenko ◽  
F. V. Skirin
Keyword(s):  
Species Composition ◽  
Russian Far East ◽  
Far East ◽  
Sakhalin Island ◽  
The South ◽  
Red Lists ◽  
The Far East ◽  
First Time ◽  
Lichen Flora

This paper presents the results of the study of lichen flora in swamp complexes of Sakhalin Island, obtained during expeditionary research in 2005–2009 and 2014–2020. The revealed species composition of lichens includes 172 species. The 28 of them are new for Sakhalin and 93 are new for the island swamp complexes. Bryocaulon pseudosatoanum is included in the regional and federal Red lists. Lecidea nylanderi is new to the south of the Far East. The information about substrates, habitats and locations is given for all species. The data on the distribution in the south of the Far East and, in some cases for all Far East, are listed for selected species that are new for Sakhalin Island and the south of the Far East. For the first time, a characteristic of the distribution of lichens in oligotrophic, eutrophic and mesotrophic bogs of Sakhalin Island is given.

Observations of the Coyote Lake, California earthquake sequence of August 6, 1979

1980 ◽  
Vol 70 (2) ◽  
pp. 559-570 ◽  
Author(s):  
R. A. Uhrhammer
Keyword(s):  
San Francisco ◽  
Fault Zone ◽  
Strong Earthquake ◽  
Main Shock ◽  
B Value ◽  
Aftershock Sequence ◽  
The South ◽  
The North ◽  
Temporal And Spatial Characteristics ◽  
Largest Aftershock

abstract At 1705 UTC on August 6, 1979, a strong earthquake (ML = 5.9) occurred along the Calaveras fault zone south of Coyote Lake about 110 km southeast of San Francisco. This strong earthquake had an aftershock sequence of 31 events (2.4 ≦ ML ≦ 4.4) during August 1979. No foreshocks (ML ≧ 1.5) were observed in the 3 months prior to the main shock. The local magnitude (ML = 5.9) and the seismic moment (Mo = 6 × 1024 dyne-cm from the SH pulse) for the main shock were determined from the 100 × torsion and 3-component ultra-long period seismographs located at Berkeley. Local magnitudes are determined for the aftershocks from the maximum trace amplitudes on the Wood-Anderson torsion seismograms recorded at Berkeley (Δ ≊ 110 km). Temporal and spatial characteristics of the aftershock sequence are presented and discussed. Some key observations are: (1) the first six aftershocks (ML ≧ 2.4) proceed along the fault zone progressively to the south of the main shock; (2) all of the aftershocks (ML ≧ 2.4) to the south of the largest aftershock (ML = 4.4) have a different focal mechanism than the aftershocks to the north; (3) no aftershocks (ML ≧ 2.4) were observed significantly to the north of the main shock for the first 5 days of the sequence; and (4) the b-value (0.70 ± 0.17) for the aftershock sequence is not significantly different from the average b-value (0.88 ± 0.08) calculated for the Calaveras fault zone from 16 yr of data.

The source rocks in the southwestern part of the South Sakhalin Basin

2017 ◽  
Vol 72 (1) ◽  
pp. 63-74
Author(s):  
T. A. Kiryukhina ◽  
S. I. Bordunov ◽  
A. A. Solov’eva
Keyword(s):  
Source Rocks ◽  
The South ◽  
Southwestern Part ◽  
South Sakhalin

Archaeological Operations

2018 ◽  
pp. 126-193
Author(s):  
Jonathan Kaplan ◽  
Federico Paredes Umaña
Keyword(s):  
Control System ◽  
Hierarchical Structure ◽  
Field Data ◽  
The South ◽  
Water Control ◽  
Long Distance ◽  
The North ◽  
Ancient Society ◽  
Preclassic Period

Chapter 4 abstracts and summarizes the very copious field data from the three lengthy field seasons at Chocolá, including the specific evidence obtained about the very extensive water control system that was discovered. Intensive grid excavations were undertaken in five operations: Mound 15, the northernmost part of the elite north sector, Mounds 6 and 7, in the southern part of the north sector, Mound 2, in the central administrative sector, and Mound 5, in the south sector. Accordingly, our three field seasons provide the specific evidence and artifacts we have been able to use to understand the clearly hierarchical structure of the ancient society and city. Of particular importance for a better understanding of the material underpinnings of Chocolá is our research at Mound 5, in the south, where we believe cacao arboriculture was developed for long-distance trade in the Preclassic period.

scholarly journals The problem of maintaining balance of liberal and conservative principles at the congresses of clergy and Laity of Southern Russia in 1917

2021 ◽  
Vol 6 (4) ◽  
pp. 17-25
Author(s):  
Yu. A. Biryukova ◽  
Keyword(s):  
Hierarchical Structure ◽  
Church Community ◽  
Periodical Press ◽  
The South ◽  
Church Administration ◽  
Southern Russia ◽  
Parish Clergy ◽  
Church Governance ◽  
The Church ◽  
Different Levels

The article examines the congresses of clergy and laity that took place after the February Revolution of 1917 in the South of Russia — on the Don, Stavropol and Kuban, which were the part of the movement propagated throughout the country. It marked the broad inclusion of clergy and laity in the reform of the synodal system of relations and the solution of accumulated intra-church problems. The author examines the nature of the expansion of the participation of parish clergy and laity in church administration, the participation of diocesan bishops in these processes, the question of how the participants of the congresses imagined combining these ideas with the traditional hierarchical structure of the Church. The study is based on the protocols of the congresses of the clergy and laity and the discussion of their decisions on the pages of the periodical press of that time. The author comes to the conclusion that the congresses of the South of Russia have shown a desire to unite all members of the church community, without violating the traditional right of diocesan bishops to church governance. The revolt against the episcopal authority has passed the Cossack territories. In the inclusion of lower clergy and laity in the church administration, their participants saw the implementation of the principles of conciliarity. The most important component of the reform was the inclusion of laypeople in the church administration bodies of different levels, which took place at the initiative of the clergy as a whole.

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