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Wyświetlanie 1-15 z 91
Tytuł:
Earthquake early warning systems (EEWSs) and their applicability in modern research – a review
System wczesnego ostrzegania przed trzęsieniem ziemi (EEWS) i jego zastosowanie we współczesnych badaniach – przegląd
Autorzy:
Vijayan, D.S.
Sivasuriyan, A.
Parthiban, D.
Powiązania:
https://bibliotekanauki.pl/articles/28765726.pdf
Data publikacji:
2022
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
earthquake
earthquake prediction
earthquake early warning system
ground motion
tremor
natural disaster
Źródło:
Acta Scientiarum Polonorum. Architectura; 2022, 21, 4; 11-20
1644-0633
Pojawia się w:
Acta Scientiarum Polonorum. Architectura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Horizontal motion of a rigid block resting on accelerating subsoil
Autorzy:
Sawicki, A.
Chybicki, W.
Powiązania:
https://bibliotekanauki.pl/articles/241061.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
vibrations
earthquake
gravity structure
Opis:
The horizontal motion of the system: rigid block-accelerating subsoil is analysed, using the most simple approach. First, the method of analysis is described and illustrated for constant coefficient of friction between the block and subsoil. Then, the changing coefficient of friction is taken into account, and its influence on the motion shown. In the next step of analysis, the influence of horizontal force on permanent relative displacement of the block with respect to subsoil is illustrated for constant and changing coefficients of friction. The method presented in this paper form a basis for critical discussion of the Newmark approach, that is a kind of standard in earthquake geotechnics.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2005, 52, 2; 147-160
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Character of Japan-China Relations since the earthquake of 2011
Autorzy:
Zabrovskaia, Larisa
Powiązania:
https://bibliotekanauki.pl/articles/599820.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Kultur Śródziemnomorskich i Orientalnych PAN
Tematy:
China
Japan
Relations
Earthquake
2011
Opis:
After the earthquake of 2011, the Japanese authorities decided to switch the focus of its foreign policy from ‘economic diplomacy’ (promoting goods) to ‘scientific diplomacy’ (‘know-how’ expansion). In this case, China may become the most important ground for promoting Japanese innovation projects. The modern stage of the Sino-Japanese politico-military rivalry and competition is accompanied by an increase in the economic interdependence and the degree of mutual interest in solving regional problems. However, in the near future the close relations between Japan and the US will not let Tokyo fundamentally reverse its policy toward China.
Źródło:
Acta Asiatica Varsoviensia; 2013, 26; 107-115
0860-6102
Pojawia się w:
Acta Asiatica Varsoviensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Messina nei racconti di viaggio polacchi nel corso dei secoli: il doppio volto della città
Autorzy:
Tylusińska-Kowalska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2083478.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
travel
Messina
earthquake
culture
description
Opis:
Messina in the stories of Polish travelers over the course of centuries: the double face of the city – The article presents Messina’s ‘verbal postcards’ left by Polish participants in the Grand Tour and travelers who visited Sicily in later times. Travelers whose accounts are widely known, such as Anonymous (1595), Michał Borch, Julian Ursyn Niemcewicz, Chrystian Kamsetzer (XVIII c.), Zygmunt Krasiński (nineteenth century), but also less well-known ones such as writer Zofia Sokołowska, arriving in Sicily in the tragic year of the earthquake (1908), left descriptions from their stays in Messina about the emotional charge they felt, one closely related to the historical moment in which they arrived on the island. This will therefore be a thorough analysis of a fragment of the Sicilian journey concerning Messina left by some Polish travelers, taking into account their professions, areas of interest and the period in which they were in Sicily.
Źródło:
Kwartalnik Neofilologiczny; 2019, 2; 205-212
0023-5911
Pojawia się w:
Kwartalnik Neofilologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Simple model of sinking of breakwater due to earthquake-induced subsoil liquefaction
Autorzy:
Sawicki, A.
Powiązania:
https://bibliotekanauki.pl/articles/240966.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
liquefaction
cyclic loadings
earthquake sinking
Opis:
The paper deals with engineering analysis of breakwater behaviour due to earthquake- induced subsoil liquefaction. First, a simple model enabling analysis of pore-pressure generation in saturated granular soils, due to cyclic loading, is outlined. It is also shown how this model can be applied to the analysis of seabed behaviour during earthquakes. Then, a simple model of breakwater resting on saturated subsoil in which the phenomena of pore-pressure generation and liquefaction take place is described. This model enables estimation of changes of seabed effective reaction due to pore-pressure generation, as well as subsequent sinking of the breakwater due to subsoil liquefaction. Numerical examples illustrate theoretical considerations and show links between breakwater behaviour and earthquake characteristics.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2003, 50, 4; 381-400
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Finite element analysis of ventilation system fire damper dynamic time-history
Autorzy:
Skibicki, D.
Pejkowski, Ł.
Stopel, M.
Powiązania:
https://bibliotekanauki.pl/articles/259158.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
fire barriers
earthquake
finite element method
Opis:
The paper presents results of the numerical analysis of the fire damper used in ventilation systems under the earthquake loading. The research was conducted in accordance with the recommendations of the Nuclear Safety Standards Commission. The aim of the analysis was to examine the fire damper with respect to its resistance to service loadings, structural integrity, and capability to stay operative after an earthquake. The analysis was carried out using the Finite Element Method in LS-Dyna software. The earthquake loading was modelled as accelerations, measured in three directions during the earthquake. For modelling of the materials behaviour, material models taking into account the influence of strain rate on hardening were used. The analysis consisted of three stages, which were: loading the construction with the earth gravity, earthquake simulation by loading with accelerations in three directions, and, finally, closing the fire damper. The analysis has shown that some of the construction elements undergo plastic deformations. However, the performed simulation of fire damper closing showed that despite these deformations, the device remains capable to keep its functionality and the damper closes hermetically. The results of the analysis were important design indications for the fire damper prototype.
Źródło:
Polish Maritime Research; 2017, 4; 116-123
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Earthquake Vs. Moonquake: A Review
Autorzy:
Moushtakim, Billah
Islam, Md. Mofizul
Rubieyat, Bin Ali
Powiązania:
https://bibliotekanauki.pl/articles/1177746.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Earthquake
moonquake
seismometer and lunar seismology
Opis:
The earthquake has most horrific and devastating effects on earth as it causes building collapse, destruction of the communication transportation infrastructure system. It further creates the natural disaster like the landslide, soil liquefaction, tsunamis; sometimes can cause enormous fire incident. There are advanced studies and new technologies are being developed to fully understand the phenomenon of the earthquake and its effect, mitigation process, and early prediction. Other bodies in planet, moon or star also experience quake. The seismometer reading from Apollo mission is still being studied to know more about lunar seismology. This study will review earthquake and moonquake as the general introduction, effects, terminology, characterization and shows the relation between these on the bases of some excellent studies done by researchers.
Źródło:
World Scientific News; 2018, 100; 1-15
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analyzing the Impact of Large Dams on Seismicity Patterns around Their Locations
Autorzy:
Parvizishad, Mina
Naseri, Simin
Nabizadeh, Ramin
Bidar, Abdollah Sohrabi
Mahvi, Amir Hossein
Goodarzi, Fatemeh
Powiązania:
https://bibliotekanauki.pl/articles/2097769.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
dam construction
impoundment
seismicity pattern
earthquake
Opis:
Dam construction is one of the most popular solutions for managing water resources. In recent years, changes in patterns of regional seismicity associated with large impoundment dams have raised concerns among environmentalists. In this study, five large dams located in Iran were studied from this perspective. The Gutenberg-Richter, linear regression and T-test were used to examine the seismic changes in the radius of 100 km of each of the dams during a twenty-five-year period before and after the construction of the dams. The results revealed that the seismicity level and relative density of large and small earthquakes in three of these dams have increased after dam construction. A significant difference between the magnitude of earthquakes, as well as the number of earthquakes before and after the construction of dams in the region, was recognized. However, the results of the T-test statistical analysis indicated that the mean depth of the earthquakes and their distance from the dams before and after construction have not changed significantly. Overall, these results indicated that the construction of large impoundment dams has been associated with some changes in patterns of regional seismicity. The findings would guide researchers to further investigate the type of impacts that dam construction may have on seismicity patterns.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2021, 68, 1; 3--17
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-linear optimization methods for small earthquake locations
Autorzy:
Pszczoła, G.
Leśniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/1964207.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska
Tematy:
global optimization
basin of attraction
earthquake location
Opis:
The problem of locating mine tremors using P-wave arrival times is revisited in the paper. A multidimensional, global, non-linear, constrained optimization method is used as a minimization algorithm for tremor location.In order to see the general properties of the minimized function a few images showing its basins of attractions have been constructed. These pictures enable us to choose efficient algorithms needed to solve location problems. The classical genetic algorithm, pure random search and the most efficient multistart algorithm have been tested. Local minimization methods should be introduced to the location procedure to increase the efficiency of tremor location.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2004, 8, 4; 583-590
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An updated earthquake catalog for Bangladesh: an attempt at a seismic risk evaluation
Autorzy:
Salman, Md Abdullah
Nomaan, Md Saleh Shakeel
Saha, Ayon
Powiązania:
https://bibliotekanauki.pl/articles/2202860.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
earthquake catalog
seismic hazard
magnitude
deformation front
Opis:
A unique, consistent, and uniform earthquake catalog is crucial for assessing seismic hazards in any locality. This study aims at compiling and processing a better uniform earthquake catalog, using this catalog to identify the probable subduction zone, and assessing seismicity parameters for Bangladesh. The study area is bounded by the geographical limits 16–29°N and 86–96°E. It includes a sum of 48,342 events which are compiled as 1.0 to 8.5 magnitudes (MW) and time period from 1548 to 2020 yrs. Uniformization is made between the body, surface wave, and moment magnitude scales to unify the catalog in terms of MW. For seismic hazard assessment or prediction studies, this catalog comprises earthquake events from Bangladesh and adjoining regions. The assessed MC obtained is around 4.0–5.0, which leads to a, b value varying between 0.71–1.12 and an a value varying between 4.85–7.12. The findings show that the MC is lower at the border of the Chittagong-Sylhet through Hill tracts than the northern part of the area with an MC 4.5–5.0 and a, b value close to 1.00. The results indicate that the study area is a seismically highly active zone in the context of seismicity parameters. Finally, the compiled catalog, seismicity of the area and a probable deformation front are presented and are recommended for use in assessing seismic hazard analysis in Bangladesh.
Źródło:
Geology, Geophysics and Environment; 2023, 49, 1; 37--51
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of Landslides Induced by the 2018 Palu Earthquake on Flash Flood in Bangga River Basin, Sulawesi, Indonesia
Autorzy:
Tunas, I. Gede
Tanga, Arody
Oktavia, Siti Rahmi
Powiązania:
https://bibliotekanauki.pl/articles/125089.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
flash flood
heavy rainfall
landslide
watershed
Palu
earthquake
Opis:
High magnitude flash flood has occurred several times in some areas in Central Sulawesi Province after the 2018 Palu Earthquake, one of them is in the Bangga River, Sigi Regency, Indonesia. It has caused massive impacts such as damaging agricultural and plantation areas and submerging public facilities and infrastructure and even causing fatalities. The flood carries a variety of materials, especially high concentration sediments which are thought to originate from eroded soils due to landslides induced by a 7.5 magnitude earthquake. These materials are eroded and transported by the flow at the upstream watershed due to heavy rainfall. This study intends to investigate the potential of landslides, factors that trigger floods and increased flooding after the earthquake. This research was conducted by investigating the landslides potency based on field surveys and interpretation of the latest satellite imagery, analyzing the characteristics of rainfall as a trigger for flooding, and predicting the flood potency as the primary impact of these two factors. Rainfall-flood transformation was simulated with the HEC-HMS Model, one of the freeware semi-distributed models commonly used in hydrological analysis. The model input is the configuration of river networks generated from the National DEM (DEMNAS), hourly rainfall during floods and other watershed parameters such as land cover, soil types and river slope. The similar simulation was also carried out on the condition of the watershed before the earthquake. Based on the results of the analysis, It can be inferred that flash floods in the Bangga River are mainly caused by heavy rainfall with long duration and landslide areas in the upper watershed triggered by the 2018 Palu Earthquake with an area of approximately 10.8 km2. The greatest depth of rainfall as a trigger for flooding is 30.4 mm with a duration of 8 hours. The results of the study also showed that landslides in the upper watershed could increase the peak flood by 33.33% from 118.56 m3/s to 158.08 m3/s for conditions before and after the earthquake.
Źródło:
Journal of Ecological Engineering; 2020, 21, 2; 190-200
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of seismic hazard using tectonic fault data: case of Beni-Chougrane Mountains (Western Algeria)
Autorzy:
Refas, Soraya
Safa, Aissa
Zaagane, Mansour
Souidi, Zahera
Hamimed, Abderahmane
Powiązania:
https://bibliotekanauki.pl/articles/89007.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
earthquake
magnitude
peak ground acceleration
active fault
Mascara region
Opis:
In the world, people are increasingly exposed to natural hazards such as earthquakes. To this end, seismic risk mapping remains an essential topic of study in order to minimize their destructive effects. These maps are needed for both seismic risk management and for the design of infrastructure. The challenge is to take into account local information provided by seismic sources (historical seismicity) as well as information related to active tectonic faults. In this article, we calculated the seismic risk in the Mascara Mountains (western Algeria) using the geometric characteristic of known faults. This study is based on an important collection of a tectonic database of these faults (Nature, geometry and geological context). This information is relevant for their seismic potential. Indeed, by including these formations we tried to compute the seismic risk this region characterized by weak seismicity. Our results show more or less alarming facts. Indeed, the magnitude values calculated are between 4.85 and 7.25, whereas the magnitudes obtained by experimental seismicity do not exceed 6 on the Richter scale. The values of the maximum ground acceleration (PGA) are between 0.03 and 0.28 g. These results were compared with assessments made on the basis of historical seismicity; the maximum values obtained do not exceed 0.2 g. The higher values of magnitude calculated from the active faults is due to: (i) the nature of the faults (inverse, normal and strike slip), (ii) the geometry (length and depth) and (iii) that some of these faults may have an aseismic character.
Źródło:
Mining Science; 2019, 26; 123-145
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seismotectonic investigations
Autorzy:
Komatina-Petrovic, S.
Stanic, S.
Powiązania:
https://bibliotekanauki.pl/articles/225431.pdf
Data publikacji:
2006
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
sejsmika
trzęsienia ziemi
Półwysep Bałkański
seismic
earthquake
Balkan Peninsula
Źródło:
Reports on Geodesy; 2006, z. 5/80; 445-450
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some features of hazard due to the Vrancea seismogenic zone
Autorzy:
Sandi, H.
Powiązania:
https://bibliotekanauki.pl/articles/225802.pdf
Data publikacji:
2006
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
sejsmika
trzęsienia ziemi
Rumunia
Bałkany
seismic
earthquake
Romania
Balkans
Źródło:
Reports on Geodesy; 2006, z. 5/80; 409-411
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametric study of the earth dams behaviour subjected to earthquake
Autorzy:
Ayeche, H.
Zitouni, Z.
Limam, A.
Bouafia, A.
Powiązania:
https://bibliotekanauki.pl/articles/2172886.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
earth dam
earthquake
slope stability
block method
Sarma method
Opis:
Static stability of an earth dam can be established by estimating the static safety factor equal to the ratio of the shear strength to the shear stress along a critical sliding area. In contrast, it is more complicated to evaluate the dynamic stability during an earthquake. The water filling the interstices of the earth dams cannot drain during the short duration of an earthquake. An excess pore water pressure DU develops, and its role is predominant in the destabilisation of the dam. The pore water increase causes a decrease in the soil shear strength. It is, therefore, crucial to evaluate and take into consideration DU in the dam dynamic stability analysis. This research is a contribution to reach this objective. A parametric study was conducted by varying the physical and mechanical soil characteristics constituting the dam, as well as its geometrical values, in order to evaluate their effects on the dynamic safety factor. The dynamic safety factor is calculated using the pseudo-static method, taking into account the excess pore water pressure that develops during cyclic loading into the granular soil of the earth dam upstream face. The results of the parametrical analytical study were also compared to the results of numerical simulations of the dam seismic stability trough pseudo-static method. The numerical simulations were done with three different software: PLAXIS and ABAQUS (based on the finite element method) and GEOSTAB (deals with the problem at the limit equilibrium using the simplified Bishop method). At the end, on one hand, we were able to describe how and at what level of the dam upstream face the sliding occurs, and on the other hand, we were able to underline the adequate combination between the dam geometric parameters and the mechanical soil characteristics which may ensure seismic stability.
Źródło:
Studia Geotechnica et Mechanica; 2022, 44, 4; 267--281
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 91

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