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Profiling Long-Distance Urban Near-Surface Structures with Temporary Fiber-Optic Sensing in Jinan City, China [PDF]

open access: yesSensors
Fine-scale urban underground exploration is vital for geological safety and hydrogeological protection. In spring-rich cities like Jinan, shallow structures—such as sedimentary layers and fault systems—act as critical regulators of groundwater migration ...
Lisong Chang   +6 more
doaj   +2 more sources

Assessment of strong earthquake risk in the Chinese mainland from 2021 to 2030

open access: yesEarthquake Research Advances, 2023
The long-term earthquake prediction from 2021 to 2030 is carried out by researching the active tectonic block boundary zones in the Chinese mainland. Based on the strong earthquake recurrence model, the cumulative probability of each target fault in the ...
Zhigang Shao   +21 more
doaj   +1 more source

NEAR REAL-TIME GEOREFERENCE OF UMANNED AERIAL VEHICLE IMAGES FOR POST-EARTHQUAKE RESPONSE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The rapid collection of Unmanned Aerial Vehicle (UAV) remote sensing images plays an important role in the fast submitting disaster information and the monitored serious damaged objects after the earthquake.
S. Wang   +5 more
doaj   +1 more source

北京黄庄—高丽营断裂土壤气体地球化学特征及其对地震活动的指示

open access: yesDizhen xuebao, 2023
通过对2017年5月土壤气CO2,Rn和Hg的野外流动测量以及2020年9月1日至2021年6月30日期间土壤气监测站Rn的连续监测,利用残差法和地震指数KS方法对黄庄—高丽营断裂南北段的活动差异和区域地震活动进行了分析。结果表明,与首都圈地区其它断裂相比,黄庄—高丽营断裂是首都圈地区活动性相对较强的活动断裂,断裂北段的土壤气体浓度和通量较南段更高,且北段上盘的CO2和Rn浓度明显高于下盘,指示断裂北段具有更强的活动性。对土壤气连续监测站数据进行分析,结果显示监测站的Rn浓度与气温 ...
Zhaofei Liu   +6 more
doaj   +1 more source

PRELIMINARY STUDY ON EARTHQUAKE SURFACE RUPTURE EXTRACTION FROM UAV IMAGES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Because of the advantages of low-cost, lightweight and photography under the cloud, UAVs have been widely used in the field of seismic geomorphology research in recent years.
X. Yuan   +5 more
doaj   +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

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