Showing 20 of 13,979 academic articles
C. Troise, C. Godano, F. Di Sena, G. De Natale et al. • Annals of Geophysics
(1999)
In this paper, we analyze local earthquakes which occurred at Somma-Vesuvius during two episodes of intense seismic swarms, in 1989 and 1995 respectively. For the selected earthquakes we have computed accurate hypocentral locations, focal m...
DOAJ
Open Access (DOAJ)
DOI: 10.4401/ag-3730
María Lidia Sánchez, J. Rossi, S. Morra, Paula Armas • Latin American Journal of Sedimentology and Basin Analysis
(2021)
Se estudió una sucesión sedimentaria que aflora en el sudeste de la Cuenca Neuquina, en el departamento El Cuy (Río Negro). La misma incluye a las formaciones Huincul y Lisandro que integran el Subgrupo Río Limay (Grupo Neuquén), y han sido...
DOAJ
Open Access (DOAJ)
Ladislav BRIMICH, Martin BEDNÁRIK, Jozef BÓDI, Gyula MENTES • Contributions to Geophysics and Geodesy
(2022)
Tidal strain time series recorded at the Vyhne Tidal Station are used to test thirteen different ocean tide loading models. Ten models have been calculated using SPOTL: EOT11a, HAMTIDE11a, OSU.TPXO72atlas, OSU.TPXO72, TPX070, DTU10, CSR4.0,...
DOAJ
Open Access (DOAJ)
DOI: 10.31577/congeo.2022.52.1.3
Yong Ren, Minghui Zhu, Lei Dai, Walter Gonzalez et al. • Geophysical Research Letters
(2026)
Abstract Substorms are often described by a loading‐unloading cycle, where onset follows gradual accumulation of solar wind magnetic flux in the magnetosphere. Yet observations indicate that intense substorms can also be directly driven, th...
DOAJ
Open Access (DOAJ)
DOI: 10.1029/2025GL119629
Dastanboo Nima, Li Xiao-Qing, Gharibdoost Hamed • Open Geosciences
(2020)
In deep tunnels with hydro-geological conditions, it is paramount to investigate the geological structure of the region before excavating a tunnel; otherwise, unanticipated accidents may cause serious damage and delay the project. The purpo...
DOAJ
Open Access (DOAJ)
DOI: 10.1515/geo-2020-0193
Samarth Urs M, Nagendra P, B.V. Suresh Kumar • Results in Earth Sciences
(2025)
We present mapping and comparision of the geology of the southern block of the Chitradurga schist belt (CSB). We have used ASTER images and geophysical data to compare the geology. Consequently, present study confirms how remote sensing int...
DOAJ
Open Access (DOAJ)
DOI: 10.1016/j.rines.2025.100117
Runlian Pang, Jing Yang, Wei Du, Aicheng Zhang et al. • Geophysical Research Letters
(2022)
Abstract High‐pressure minerals in impact ejecta quantify shock conditions and provide clues for provenance analysis. The sampling site of Chang’E‐5 may contain distal ejecta, which is critical for constraining the impact events and interpr...
DOAJ
Open Access (DOAJ)
DOI: 10.1029/2022GL098722
Peilin Wang, Bingxin Liu, Ying Li, Peng Chen et al. • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
(2024)
As shipping routes and resource exploration move toward high-latitude oceans, sea ice becomes a major threat to the safety of ship navigation, posing significant challenges to the shipping industry and offshore resource development. Continu...
DOAJ
Open Access (DOAJ)
DOI: 10.1109/JSTARS.2023.3335294
N.F. Hernández Reyes, R. Fernández • Geofísica Internacional
(1991)
El filtrado de velocidad de secciones sísmicas tiene como objeto eliminar la presencia de ruidos que enmascaran los arribos asociados a horizontes reflectores de interés. Se plantea una técnica de filtrado de velocidad que consiste en aplic...
DOAJ
Open Access (DOAJ)
DOI: 10.22201/igeof.00167169p.1991.30.2.1132
J. Schwarz, J. Schwarz, G. Kirchengast, G. Kirchengast et al. • Atmospheric Measurement Techniques
(2018)
Global Navigation Satellite System (GNSS) radio occultation
(RO) observations are highly accurate, long-term stable data sets and are
globally available as a continuous record from 2001. Essential climate
variables for the thermodynamic ...
DOAJ
Open Access (DOAJ)
DOI: 10.5194/amt-11-2601-2018
Kostyleva Natal'ya, Kostylev Dmitry • Russian Journal of Earth Sciences
(2026)
In April 2024, an engineering seismometric station was installed in a residential building in Severo-Kurilsk (Paramushir Island, Sakhalin Oblast) to obtain information about the vibrations of structures and adjacent ground areas during eart...
DOAJ
Open Access (DOAJ)
DOI: 10.2205/2026es001126
Jian Zhang, Yanxia Fan, Wei Chu, Yubei He • Dizhen xuebao
(2024)
长白山天池火山是晚新生代中心喷发式复合型层状火山，全新世以来发生过多次大规模喷发，与深部岩浆热扰动活动相关的构造地震、地表形变、温泉气体组份等均显示该火山仍可能再次喷发，是我国东部潜在的高温地热资源区。长白山天池火山周边地下水十分丰富，具有形成高温水热活动的岩浆囊热源。为探索地壳浅层隐伏的高温地热资源，本文在野外考察基础上，利用地热学方法，计算了该区地层结构与热状态，分析了地表下的火山地热系统。结果表明：长白山天池火山区地下2 km深处的温度在66—110℃之间，12 km深...
DOAJ
Open Access (DOAJ)
DOI: 10.11939/jass.20220180
I. P. Escobar, N. C. de Sá, J. J. Dantas, F. J. S. S. Dias • Brazilian Journal of Geophysics
(1996)
A Linha de Calibração Gravimétrica Observatório Nacional - Agulhas Negras foi implantada com o objetivo de monitorar as características dos gravímetros utilizados nos levantamentos da Rede Gravimétrica Fundamental Brasileira. Trata-se de um...
DOAJ
Open Access (DOAJ)
DOI: 10.22564/rbgf.v14i1.1210
Yuanning Li, Chao Xu, Fei Geng, Chunyao Bu et al. • Dizhen xuebao
(2024)
为揭示诱发地震和天然地震对建筑结构影响及其破坏概率分布的影响，本文以我国典型砌体结构为研究对象，开展了考虑诱发地震影响的易损性研究。首先建立了典型三层和六层砌体结构分析模型，然后以40条震级和震中距都接近的天然地震地震动和诱发地震地震动为输入开展Pushover分析，分别建立基于峰值加速度PGA和结构基本周期加速度反应谱值Sa的易损性曲线，最后采用循环往复加载方法对两次诱发地震作用下的结构倒塌易损性进行了分析讨论。结果表明：当以PGA作为易损性输入地震动参数时，天然地震地震动...
DOAJ
Open Access (DOAJ)
DOI: 10.11939/jass.20230060
A. U. Adebanjo, B. I. O. Dahunsi, J. O. Labiran • Nigerian Journal of Technological Development
(2021)
In this study, locally produced Metakaolin (MK) was used as an admixture in recycled aggregate concrete of grades M 25 and M 30. The content of MK varied from 0-15% at 5% intervals. The physical and mechanical properties (bulk density, spec...
DOAJ
Open Access (DOAJ)
Shujie Gu, Xu Liu, Lunjin Chen, M. E. Usanova et al. • Geophysical Research Letters
(2025)
Abstract Electromagnetic ion cyclotron (EMIC) waves are discrete electromagnetic emissions separated by multiple ion gyrofrequencies. Harmonic EMIC waves are defined as waves with a strong electric or magnetic field (or both) at the harmoni...
DOAJ
Open Access (DOAJ)
DOI: 10.1029/2025GL115485
Baizan Tang, Wenchao Deng, Su Chen, Xiaojun Li et al. • Earthquake Research Advances
(2022)
Based on the the large shaking table test results on irregular section subway station structure in soft soil, an overall time-history numerical simulation is conducted to study the nonlinear dynamic interaction of the soil-irregular undergr...
DOAJ
Open Access (DOAJ)
DOI: 10.1016/j.eqrea.2022.100168
Josibel G. Oliveira Jr., Walter E. Medeiros, Werner F. Tabosa, Helenice Vital • Brazilian Journal of Geophysics
(2008)
ABSTRACT
A sand dune located near São Bento do Norte and Caiçara do Norte towns (northern coastal region of Rio Grande do Norte state, Northeastern Brazil) is rapidly migrating toward urban areas. To understand the depositional processes (e...
DOAJ
Open Access (DOAJ)
DOI: 10.1590/S0102-261X2008000100001
P. Stefanelli, A. Sicali, I. Loretti, C. Del Negro et al. • Annals of Geophysics
(2008)
We analyse a microgravity data set acquired from two spring LaCoste & Romberg gravity meters operated in parallel at the same site on Etna volcano (Italy) for about two months (August September 2005). The high sampling rate acquisitio...
DOAJ
Open Access (DOAJ)
DOI: 10.4401/ag-4441
Jue Ning, Xu Chen, Tao Wang, Qing Xu et al. • Geophysical Research Letters
(2025)
Abstract The modulation of anticyclonic subsurface‐intensified mode‐water eddies (MWEs) on the oceanic physical and biological responses to tropical cyclones (TCs) is investigated using satellite measurements, in situ observations and numer...
DOAJ
Open Access (DOAJ)
DOI: 10.1029/2024GL112598