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1,195 Results Found

  • Feature Paper
  • Article
  • Open Access
14 Citations
3,952 Views
15 Pages

Two Mechanisms of Earthquake-Induced Hydrochemical Variations in an Observation Well

  • Zhihua Zhou,
  • Jun Zhong,
  • Jing Zhao,
  • Rui Yan,
  • Lei Tian and
  • Hong Fu

30 August 2021

Due to frequent large earthquakes in the Lanping-Simao fault basin—located in China’s Yunnan Province—the Simao observation well has observed groundwater discharge, as well as Ca2+, Mg2+, and HCO3− concentrations every day between 2001–2018. Over 18...

  • Article
  • Open Access
13 Citations
4,527 Views
17 Pages

18 March 2020

The acquisition of a 3D displacement field can help to understand the crustal deformation pattern of seismogenic faults and deepen the understanding of the earthquake nucleation. The data for 3D displacement field extraction are usually from GPS/inte...

  • Article
  • Open Access
43 Citations
7,593 Views
9 Pages

17 October 2013

The particular process of LCA (Lithosphere-Coversphere-Atmosphere) coupling referring to local tectonic structures and coversphere conditions is very important for understanding seismic anomaly from GEOSS (Global Earth Observation System of Systems)....

  • Article
  • Open Access
10 Citations
2,540 Views
15 Pages

7 August 2023

The study presents seismogenic ULF (ultra-low-frequency) wave effects, as observed at our own new magnetic observatory at Asahi (geographic coordinates: 35.770° N, 140.695° E) in Chiba Prefecture. Our target earthquake (EQ) is a huge one offs...

  • Article
  • Open Access
3 Citations
1,717 Views
16 Pages

Assessing Earthquake Forecasting Performance Based on Annual Mobile Geomagnetic Observations in Southwest China

  • Zhe Ni,
  • Hongyan Chen,
  • Rui Wang,
  • Miao Miao,
  • Hengxin Ren,
  • Jiehao Yuan,
  • Zhendong Wang,
  • Yufei Zhao and
  • Siyuan Zhou

28 November 2023

There have been reports about anomalies in mobile geomagnetic data before earthquakes; however, whether it can be used as an indicator for identifying potential earthquake areas was not be explored. In this study, we propose two parameters for earthq...

  • Article
  • Open Access
6 Citations
3,810 Views
16 Pages

Preliminary Observations on Historical Castle Trakošćan (Croatia) Performance under Recent ML ≥ 5.5 Earthquakes

  • Snježana Markušić,
  • Davor Stanko,
  • Davorin Penava,
  • Domagoj Trajber and
  • Radmila Šalić

9 November 2021

Trakošćan Castle, built on a rocky peak in the late 13th century, is a cultural heritage site protected as a historical entity by the Republic of Croatia. The Castle is constructed as a highly irregular masonry structure with timber or shallow masonr...

  • Article
  • Open Access
3 Citations
2,635 Views
20 Pages

Fractal Features in kHz Electromagnetic Observations Preceding Near-Field Earthquakes in Ilia, Greece

  • Dimitrios Nikolopoulos,
  • Ermioni Petraki,
  • Muhammad Rafique,
  • Aftab Alam,
  • Demetrios Cantzos and
  • Panayiotis Yannakopoulos

15 December 2023

This paper reports kHz EM observations recorded by the Kardamas station in Ilia, Greece a few days before four near-field earthquakes occurred within a 24 km radius, with epicentral depths below 29 km. This work investigated the fractal features hidd...

  • Technical Note
  • Open Access
17 Citations
4,895 Views
10 Pages

18 January 2022

The 2021 Maduo earthquake occurred in the interior of the Bayan Har block of the Tibetan Plateau. We used space-born radar interferometry to study the coseismic deformation of this earthquake. Sentinel-1 InSAR observations along ascending and descend...

  • Article
  • Open Access
1 Citations
436 Views
28 Pages

Multi-Parameter and Multi-Layer Observations of Electromagnetic Precursors to a Huge Hokkaido Earthquake (M = 6.7) on 5 September, 2018, and Lithosphere–Atmosphere–Ionosphere Coupling Channel

  • Masashi Hayakawa,
  • Maria Solovieva,
  • Galina Kopylova,
  • Shinji Hirooka,
  • Sudipta Sasmal,
  • Kousik Nanda,
  • Shih-Sian Yang,
  • Koichiro Michimoto and
  • Hide’aki Hinata

3 December 2025

A series of multi-parameter, multi-layer observations was conducted to study possible electromagnetic precursors associated with the M 6.7 earthquake that struck Iburi, Hokkaido, Japan, at 18:07:59 UT on 5 September 2018. The most significant observa...

  • Article
  • Open Access
506 Views
12 Pages

11 December 2025

Resonance is currently more of a mechanical engineering concept than a civil engineering one. This is because in earthquake engineering or science, there has not been one definitive predominant frequency of seismic action, which is something that the...

  • Article
  • Open Access
30 Citations
3,765 Views
29 Pages

Multi-Parameter Observations of Seismogenic Phenomena Related to the Tokyo Earthquake (M = 5.9) on 7 October 2021

  • Masashi Hayakawa,
  • Alexander Schekotov,
  • Jun Izutsu,
  • Shih-Sian Yang,
  • Maria Solovieva and
  • Yasuhide Hobara

Multi-parameter observations, powerful for the study of lithosphere–atmosphere–ionosphere coupling (LAIC), have been performed for a recent Tokyo earthquake (EQ) with a moderate magnitude (M = 5.9) and rather larger depth (~70 km) on 7 Oc...

  • Article
  • Open Access
41 Citations
5,205 Views
29 Pages

22 November 2021

The purpose of this paper is to discuss the lithosphere–atmosphere–ionosphere coupling (LAIC) effects with the use of multiparameter precursor observations for two successive Japanese earthquakes (EQs) (with a magnitude of around 7) in February and M...

  • Article
  • Open Access
3 Citations
2,590 Views
14 Pages

Source Model and Seismogenic Environment of the Ms 6.4 Yangbi Earthquake in Yunnan, China—Based on InSAR Observation

  • Wei Li,
  • Yutong Huang,
  • Xiaohang Wang,
  • Xin Jiang,
  • Xiaotong Li,
  • Xukang Xie,
  • Qianwen Wang and
  • Haowen Yan

10 June 2022

On 21 May 2021, an Ms 6.4 earthquake struck Yangbi County, Dali Prefecture, Yunnan Province, China, which is the largest earthquake to hit this area since 1976. In this paper, we obtained the coseismic deformation of the Yangbi earthquake in Yunnan P...

  • Article
  • Open Access
20 Citations
6,400 Views
16 Pages

24 August 2019

On 28 September 2018, an Mw 7.4 earthquake, followed by a tsunami, struck central Sulawesi, Indonesia. It resulted in serious damage to central Sulawesi, especially in the Palu area. Two descending paths of the Advanced Land Observation Satellite 2 (...

  • Article
  • Open Access
1 Citations
1,427 Views
16 Pages

On the Ionosphere–Atmosphere–Lithosphere Coupling During the 9 November 2022 Italian Earthquake

  • Mirko Piersanti,
  • Giulia D’Angelo,
  • Dario Recchiuti,
  • Fabio Lepreti,
  • Paola Cusano,
  • Enza De Lauro,
  • Vincenzo Carbone,
  • Pietro Ubertini and
  • Mariarosaria Falanga

In the last decades, the scientific community has been focused on searching earthquake signatures in the Earth’s atmosphere, ionosphere, and magnetosphere. This work investigates an offshore Mw 5.5 earthquake that struck off the Marche region&r...

  • Article
  • Open Access
2 Citations
3,004 Views
20 Pages

Swarm Investigation of Ultra-Low-Frequency (ULF) Pulsation and Plasma Irregularity Signatures Potentially Associated with Geophysical Activity

  • Georgios Balasis,
  • Angelo De Santis,
  • Constantinos Papadimitriou,
  • Adamantia Zoe Boutsi,
  • Gianfranco Cianchini,
  • Omiros Giannakis,
  • Stelios M. Potirakis and
  • Mioara Mandea

21 September 2024

Launched on 22 November 2013, Swarm is the fourth in a series of pioneering Earth Explorer missions and also the European Space Agency’s (ESA’s) first constellation to advance our understanding of the Earth’s magnetic field and the...

  • Article
  • Open Access
3 Citations
2,489 Views
18 Pages

20 June 2023

The 2021 Yangbi Ms 6.4 earthquake in Yunnan, China, occurred in an area where the Global Positioning System (GPS) geodetic observations are particularly intensive. Based on a detailed retrospective analysis of the GPS observations of about 133 statio...

  • Article
  • Open Access
3 Citations
2,228 Views
10 Pages

18 January 2022

The coseismic geothermal changes of ground temperature observed at observatories near the epicenter of the 2020 Jiashi Ms = 6.4 earthquake in China, provide a unique opportunity to study heat generation and conduction in rock. Here, evolutions of roc...

  • Article
  • Open Access
19 Citations
6,787 Views
15 Pages

4 January 2023

Synthetic Aperture Radar (SAR) remote sensing has been widely used as one of the most effective tools for responding to earthquake disasters. In general, damaged-building detection with SAR data has been conducted based on change detection using temp...

  • Article
  • Open Access
12 Citations
4,537 Views
31 Pages

The Preparation Phase of the 2023 Kahramanmaraş (Turkey) Major Earthquakes from a Multidisciplinary and Comparative Perspective

  • Gianfranco Cianchini,
  • Massimo Calcara,
  • Angelo De Santis,
  • Alessandro Piscini,
  • Serena D’Arcangelo,
  • Cristiano Fidani,
  • Dario Sabbagh,
  • Martina Orlando,
  • Loredana Perrone and
  • Maurizio Soldani
  • + 3 authors

29 July 2024

On 6 February 2023, Turkey experienced its most powerful earthquake in over 80 years, with a moment magnitude (Mw) of 7.7. This was then followed by a second earthquake of Mw 7.6 just nine hours later. According to the lithosphere–atmosphere&nd...

  • Article
  • Open Access
29 Citations
4,267 Views
20 Pages

13 October 2023

On 6 February 2023, two major earthquakes, MW7.7 and MW7.6, occurred in the Kahramanmaraş city region of southeast Türkiye. As a result of the earthquakes that affected the region, around 60,000 people died and thousands of buildings suffer...

  • Article
  • Open Access
1 Citations
1,907 Views
18 Pages

21 October 2024

Rapid damage assessment after an earthquake is crucial for allocating and prioritizing emergency actions. Building damage due to an earthquake depends on the seismic hazard and the building’s strength. While it is now possible to promptly acces...

  • Article
  • Open Access
6 Citations
4,798 Views
29 Pages

Damage to Churches after the 2016 Central Italy Seismic Sequence

  • Barbara Ferracuti,
  • Stefania Imperatore,
  • Maria Zucconi and
  • Silvia Colonna

The present study focuses on seismic damage to 36 masonry churches observed after the 2016 Central Italy earthquake. In the sample, recurrent architectural and structural features were identified and accurately described. In order to classify the chu...

  • Article
  • Open Access
10 Citations
5,452 Views
16 Pages

IonoSeis: A Package to Model Coseismic Ionospheric Disturbances

  • Thomas Dylan Mikesell,
  • Lucie M. Rolland,
  • Rebekah F. Lee,
  • Florian Zedek,
  • Pierdavide Coïsson and
  • Jean-Xavier Dessa

1 August 2019

We present the framework of the modeling package IonoSeis. This software models Global Navigation Satellite System (GNSS) derived slant total electron content (sTEC) perturbations in the ionosphere due to the interaction of the neutral atmosphere and...

  • Editorial
  • Open Access
67 Citations
12,366 Views
10 Pages

24 February 2017

Earth Observations (EO) encompasses different types of sensors (e.g., Synthetic Aperture Radar, Laser Imaging Detection and Ranging, Optical and multispectral) and platforms (e.g., satellites, aircraft, and Unmanned Aerial Vehicles) and enables us to...

  • Article
  • Open Access
34 Citations
4,992 Views
22 Pages

16 January 2020

The precursory atmospheric gravity wave (AGW) activity in the stratosphere has been investigated in our previous paper by studying an inland Kumamoto earthquake (EQ). We are interested in whether the same phenomenon occurs or not before another major...

  • Communication
  • Open Access
6 Citations
2,610 Views
14 Pages

A New Analysis Method for Magnetic Disturbances Possibly Related to Earthquakes Observed by Satellites

  • Xin-Yan Ouyang,
  • Yong-Fu Wang,
  • Xue-Min Zhang,
  • Ya-Lu Wang and
  • Ying-Yan Wu

5 June 2022

Studies on magnetic disturbances in ultralow frequency ranges related to earthquakes observed by satellites are still limited. Based on Swarm satellites, this paper proposes a new analysis method to investigate pre-earthquake magnetic disturbances by...

  • Article
  • Open Access
5 Citations
2,163 Views
12 Pages

29 July 2022

Velocity changes (dv/v) during and after earthquakes are important indicators for understanding the earthquake-induced mechanical damage evolution of rock slopes. However, studying slope responses associated with various seismic loading still remains...

  • Article
  • Open Access
17 Citations
3,377 Views
15 Pages

Analysis of Pre-Earthquake Space Electric Field Disturbance Observed by CSES

  • Zhong Li,
  • Baiyi Yang,
  • Jianping Huang,
  • Huichao Yin,
  • Xuming Yang,
  • Haijun Liu,
  • Fuzhi Zhang and
  • Hengxin Lu

In order to explore the abnormal disturbance of the space electric field caused by earthquakes using the electric field data of the ULF and VLF frequency bands of the electric field observed by the ZH-1 satellite, and taking the Mw7.7 earthquake in t...

  • Article
  • Open Access
2 Citations
2,186 Views
19 Pages

26 October 2023

The Pamir, situated in central Asia, is a result of the ongoing northward advance of the Indian continent, leading to compression of the Asian landmass. While geodetic and seismic data typically indicate that the most significant deformation in Pamir...

  • Article
  • Open Access
947 Views
17 Pages

Assessing Earthquake-Triggered Ecosystem Carbon Loss Using Field Sampling and UAV Observation

  • Wen Zeng,
  • Baofeng Di,
  • Yu Zhan,
  • Wen He,
  • Junhui Li,
  • Ziquan Zuo,
  • Siwen Yu and
  • Tan Mi

23 April 2025

Earthquakes disrupt local organic carbon distribution by stripping vegetation, destabilizing soil, and triggering landslides, leading to immediate carbon loss and potential long-term climate impacts. While remote sensing techniques effectively assess...

  • Article
  • Open Access
6 Citations
2,600 Views
18 Pages

Study on Electron Density Anomalies Possibly Related to Earthquakes Based on CSES Observations

  • Chengcheng Han,
  • Rui Yan,
  • Dedalo Marchetti,
  • Weixing Pu,
  • Zeren Zhima,
  • Dapeng Liu,
  • Song Xu,
  • Hengxin Lu and
  • Na Zhou

30 June 2023

This research examines the correlation between seismic activity and variations in ionospheric electron density (Ne) using the data from the Langmuir probe (LAP) onboard the China Seismo-Electromagnetic Satellite (CSES) during nighttime. Statistical a...

  • Article
  • Open Access
10 Citations
3,419 Views
25 Pages

26 April 2024

Studies have demonstrated the potential of satellite thermal infrared observations to detect anomalous signals preceding large earthquakes. However, the lack of well-defined precursory characteristics and inherent complexity and stochasticity of the...

  • Article
  • Open Access
10 Citations
2,805 Views
15 Pages

Thermal Anomalies Observed during the Crete Earthquake on 27 September 2021

  • Soujan Ghosh,
  • Sudipta Sasmal,
  • Sovan K. Maity,
  • Stelios M. Potirakis and
  • Masashi Hayakawa

This study examines the response of the thermal channel within the Lithosphere–Atmosphere–Ionosphere Coupling (LAIC) mechanism during the notable earthquake in Crete, Greece, on 27 September 2021. We analyze spatio-temporal profiles of Su...

  • Article
  • Open Access
3 Citations
2,386 Views
14 Pages

Decaying Post-Seismic Deformation Observed on the Korean Peninsula Following the 2011 Tohoku-Oki Earthquake

  • Dong-Hyo Sohn,
  • Byung-Kyu Choi,
  • Sungshil Kim,
  • Sun-Cheon Park,
  • Won-Jin Lee and
  • Pil-Ho Park

30 June 2021

We investigated decaying post-seismic deformation observed on the Korean Peninsula associated with the 2011 Mw 9.0 Tohoku-Oki earthquake using Global Navigation Satellite System (GNSS). The GNSS velocity vectors were estimated in five periods from 20...

  • Article
  • Open Access
12 Citations
3,584 Views
20 Pages

16 December 2021

An Ms7.0 earthquake struck Jiuzhaigou (China) on 8 August 2017. The epicenter was in the eastern margin of the Tibetan Plateau, an area covered by a dense time-varying gravity observation network. Data from seven repeated high-precision hybrid gravit...

  • Communication
  • Open Access
17 Citations
2,680 Views
12 Pages

15 May 2024

Characterizing the coseismic slip behaviors of earthquakes could offer a better understanding of regional crustal deformation and future seismic potential assessments. On 18 December 2023, an Mw 6.0 earthquake occurred on the Lajishan–Jishishan...

  • Article
  • Open Access
48 Citations
8,091 Views
11 Pages

22 June 2016

Determining the relationship between crustal movement and faulting in thrust belts is essential for understanding the growth of geological structures and addressing the proposed models of a potential earthquake hazard. A Mw 5.9 earthquake occurred on...

  • Communication
  • Open Access
1 Citations
1,157 Views
12 Pages

Fault Kinematics of the 2022 Delingha Mw 5.6 and Mw 5.7 Earthquakes Revealed by InSAR Observations

  • Xuening Wang,
  • Donglin Wu,
  • Lian Liu,
  • Chenglong Li,
  • Yongliang Bai and
  • Xing Huang

14 November 2024

Between January and April 2022, three moderate earthquakes (Mw 5.6 on 23 January, Mw 5.7 on 25 March, and Mw 5.1 on 15 April) struck the Hala Lake area of Delingha, Qinghai, China. Their seismogenic faults are poorly mapped, resulting in an unclear u...

  • Article
  • Open Access
36 Citations
5,136 Views
15 Pages

13 April 2019

Big earthquakes often excite the acoustic resonance between the earth’s surface and the lower atmosphere. The perturbations can propagate upward into the ionosphere and trigger ionospheric anomalies detected by dual-frequency GPS observations,...

  • Communication
  • Open Access
4 Citations
3,075 Views
9 Pages

13 January 2023

Earthquakes at depths of ≥300 km are generally called deep-focus earthquakes. Only two deep-focus earthquakes with Mw 8.0 or more have occurred in this century—the 2013 Okhotsk earthquake (Mw 8.3) and the 2018 Fiji earthquake (Mw 8.2) on 19...

  • Article
  • Open Access
8 Citations
3,763 Views
20 Pages

Observed Seismic Behavior of a HDRB and SD Isolation System under Far Fault Earthquakes

  • Antonello Salvatori,
  • Giovanni Bongiovanni,
  • Paolo Clemente,
  • Chiara Ormando,
  • Fernando Saitta and
  • Federico Scafati

The behavior of a reinforced concrete building, seismically isolated with high damping rubber bearing (HDRB) and sliding devices (SD), observed during the most important events of the seismic sequence that struck central Italy from August 2016 to Jan...

  • Article
  • Open Access
7 Citations
3,279 Views
21 Pages

30 April 2023

A retrospective analysis of complex geophysical data around the time of the two most powerful earthquakes that occurred in Alaska and had magnitudes M = 8.2 (29 July 2021) and M = 9.2 (28 March 1964), respectively, is carried out. The aim of the rese...

  • Review
  • Open Access
54 Citations
12,263 Views
34 Pages

20 September 2019

We digitize surface rupture maps and compile observational data from 67 publications on ten of eleven historical, surface-rupturing earthquakes in Australia in order to analyze the prevailing characteristics of surface ruptures and other environmenta...

  • Article
  • Open Access
1,606 Views
12 Pages

The Wenchuan earthquake (Ms8.0), which struck Sichuan Province, China, on 12 May 2008, was one of the most devastating seismic events in recent Chinese history. It resulted in the deaths of nearly 90,000 people, left millions homeless, and caused wid...

  • Article
  • Open Access
8 Citations
2,032 Views
19 Pages

Statistical Analysis of High–Energy Particle Perturbations in the Radiation Belts Related to Strong Earthquakes Based on the CSES Observations

  • Lu Wang,
  • Zhenxia Zhang,
  • Zeren Zhima,
  • Xuhui Shen,
  • Wei Chu,
  • Rui Yan,
  • Feng Guo,
  • Na Zhou,
  • Huaran Chen and
  • Daihui Wei

19 October 2023

Earthquakes (EQs) are a significant natural threat to humanity. In recent years, with advancements in space observation technology, it has been put forward that the electromagnetic effects of earthquakes can propagate into space in various ways, caus...

  • Technical Note
  • Open Access
32 Citations
3,668 Views
17 Pages

Multi-Experiment Observations of Ionospheric Disturbances as Precursory Effects of the Indonesian Ms6.9 Earthquake on August 05, 2018

  • Xuemin Zhang,
  • Yalu Wang,
  • Mohammed Yahia Boudjada,
  • Jing Liu,
  • Werner Magnes,
  • Yulin Zhou and
  • Xiaohui Du

11 December 2020

Taking the 2018 Ms6.9 Indonesia earthquake as a case study, the ionospheric perturbations in very low frequency (VLF) transmitters recorded by China Seismo-Electromagnetic Satellite (CSES) were mainly investigated, as well as the multi parameters of...

  • Article
  • Open Access
5 Citations
3,830 Views
22 Pages

19 January 2025

The study of the Earth’s ionosphere is a topic that has increased in relevance over the past few decades. The ability to predict the ionosphere’s behavior, as well as to mitigate the effects of its rapid changes, is a matter of primary im...

  • Feature Paper
  • Article
  • Open Access
9 Citations
4,570 Views
13 Pages

Source Parameter Estimation of the 2009 Ms6.0 Yao’an Earthquake, Southern China, Using InSAR Observations

  • Wei Qu,
  • Bing Zhang,
  • Zhong Lu,
  • Jin Woo Kim,
  • Qin Zhang,
  • Yuan Gao,
  • Ming Hao,
  • Wu Zhu and
  • Feifei Qu

23 February 2019

On 9 July 2009, an Ms6.0 earthquake occurred in mountainous area of Yao’an in Yunnan province of Southern China. Although the magnitude of the earthquake was moderate, it attracted the attention of many Earth scientists because of its threat to...

  • Article
  • Open Access
69 Citations
5,825 Views
25 Pages

Magnetospheric–Ionospheric–Lithospheric Coupling Model. 1: Observations during the 5 August 2018 Bayan Earthquake

  • Mirko Piersanti,
  • Massimo Materassi,
  • Roberto Battiston,
  • Vincenzo Carbone,
  • Antonio Cicone,
  • Giulia D’Angelo,
  • Piero Diego and
  • Pietro Ubertini

11 October 2020

The short-term prediction of earthquakes is an essential issue connected with human life protection and related social and economic matters. Recent papers have provided some evidence of the link between the lithosphere, lower atmosphere, and ionosphe...

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