Results 21 to 30 of about 4,539 (295)

Application of the EEPAS earthquake forecasting model to Italy [PDF]

open access: yes, 2023
The Every Earthquake a Precursor According to Scale (EEPAS) forecasting model is a space-time point-process model based on the precursory scale increase (⁠ψ) phenomenon and associated predictive scaling relations.
P Gasperini   +8 more
core   +1 more source

Hydrogeochemistry of Fault-Related Hot Springs in the Qaidam Basin, China

open access: yesApplied Sciences, 2023
Hydrogeochemical characterization studies are regarded as an important method for determining the origin of hot springs. The major elements, trace elements, and stable isotopes of four groups of hot spring water samples and two groups of gas samples ...
Jie Tang   +10 more
doaj   +1 more source

THE DETERMINATION METHOD OF EXTREME EARTHQUAKE DISASTER AREA BASED ON THE DUST DETECTION RESULT FROM GF-4 DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The remote sensing has played an important role in many earthquake emergencies by rapidly providing the building damage, road damage, landslide and other disaster information. The earthquake in the mountains often caused to the loosening of the mountains
A. Dou, L. Ding, M. Chen, X. Wang
doaj   +1 more source

STUDY ON SITE CONDITIONS BASED ON TOPOGRAPHIC SLOPE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The travel-time averaged shear-wave velocity to a depth of 30m (Vs30) below the Earth’s surface is widely used to classify sites in many building codes. Vs30 is also used to estimate site classification in recent ground-motion prediction equations (GMPEs)
X. Wu, X. Wang, X. Yuan, M. Chen, A. Dou
doaj   +1 more source

The VLF-induced ionospheric perturbations detected by DEMETER during solar minimum

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2023
The VLF-induced ionospheric heating events from the powerful transmitter NWC are collected at extremely low solar activity years of 2008–2009, and their spatial and temporal distribution features are investigated.
Xuemin Zhang, Lei Dong, Lei Nie
doaj   +1 more source

Earthquake forecasting from paleoseismic records. [PDF]

open access: yesNat Commun
Forecasting large earthquakes along active faults is of critical importance for seismic hazard assessment. Statistical models of recurrence intervals based on compilations of paleoseismic data provide a forecasting tool.
Wang T   +7 more
europepmc   +2 more sources

分形插值法在地电场干扰数据处理中的应用

open access: yesDizhen xuebao, 2021
当地电场和地电阻率同场地观测时,地电场观测会受到地电阻率观测的供电干扰,这类干扰时间短、干扰形态和出现时间固定,影响了地电场观测数据的正常变化形态,给数据分析和地震科学研究造成困难。为解决这一干扰问题,本文在比较分形插值方法与传统插值方法优劣的基础上,采用分形插值方法对受干扰的地电场观测数据进行重建,以提高信号重建的精度。结果表明,采用该方法重建的数据是对原数据很好的近似,可有效地恢复观测数据信息,保持观测数据原有的变化趋势。
Lanwei Wang   +3 more
doaj   +1 more source

Effect of non-hydrostatic stress on the structure and elasticity of NaCl by first-principles calculation

open access: yesAIP Advances, 2019
Non-hydrostatic stresses have a unique influence on materials. To understand the effect of non-hydrostatic stress on NaCl, one of the most widely used pressure calibrant in high-pressure experiments, the lattice constants, density, elastic modulus, Young’
Lei Liu, Longxing Yang, Li Yi, Hong Liu
doaj   +1 more source

吉兰泰断陷盆地周缘断裂带气体释放及其对断层活动性的指示意义

open access: yesDizhen xuebao, 2019
为了研究吉兰泰断陷盆地周缘断裂带气体排放及其对断层活动性的指示意义,在盆地周缘4条活动断裂上布设了5条土壤气测量剖面和1条电磁测量剖面,观测了土壤气中Rn,Hg和CO2的浓度、释放通量和地电阻率,对各测量剖面进行了土壤化学组分分析,计算得到了断层活动性相对指数KQ。研究结果显示:土壤气体CO2和Rn受渗透性较低的粉砂土阻挡,主要沿结构破碎的断层上盘逃逸,并形成浓度高峰;吉兰泰盆地南缘土壤气Rn,Hg和CO2的浓度和释放通量最高,可能与盆地西南缘花岗岩中U和Ra的运移以及盆地南缘碳酸盐岩的分解有一定的关系。
Zhaofei Liu   +6 more
doaj   +1 more source

Forecasting earthquakes, [PDF]

open access: yesGeophysical Journal International, 1946
Abstract It was twelve minutes after five in San Francisco on the fateful morning of April 18, 1906. Most of the city's inhabitants were still in bed when the earthquake struck and the Great San Francisco Fire was started. Why was the public not warned of the coming catastrophe?
openaire   +1 more source

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