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Zejun Dong, Xuan Feng, Haoqiu Zhou, Lilong Zou and Motoyuki Sato
Hand-held ground penetrating radar (GPR) systems have been widely applied to landmine detections during recent decades. The accuracy of an imaging result by migration for a hand-held GPR is strongly related to the accuracy of subsurface velocity distribu...
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Vladimir Tcheverda and Kirill Gadylshin
The depth velocity model is a critical element for providing seismic data processing success, as it is responsible for the times of waves? propagation and, therefore, prescribes the location of geological objects in the resulting seismic images. Construc...
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Alexander L. Pleshkevich,Anton V. Ivanov,Vadim D. Levchenko,Sergey A. Khilkov,Boris P. Moroz
Pág. 4 - 8
The goal of seismic migration is to reconstruct the image of Earth's depth inhomogeneities on the base of seismic data. Seismic data is obtained using shots in shallow wells that are located in a dense grid points. Those shots could be considered as spec...
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In March 2016, arguably the most ambitious 4D (3D space + over time) active-source seismic survey for geothermal exploration in the U.S. was acquired at Brady Natural Laboratory, outside Fernley, Nevada. The four-week experiment included 191 vibroseis so...
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Iván de la Cruz Vargas Cordero, Umberta Tinivella, Lucía Villar Muñoz, Michela Giustiniani
Pág. 263 - 274
In this study one seismic section offshore Chiloé Island was analyzed to better define the seismic character
of the hydrate-bearing sediments. The velocity analysis was used to estimate the gas-phase concentration and relate it to
the geological features...
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Qiang Fu, Renjie Hou, Tianxiao Li, Peiru Yan, Ziao Ma
Pág. 1 - 17
Snow cover is the most common upper boundary condition influencing the soil freeze-thaw process in the black soil farming area of northern China. Snow is a porous dielectric cover, and its unique physical properties affect the soil moisture diffusion, he...
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Pier Paolo G. Bruno
In this paper, seismic exploration methods are reviewed with a particular emphasis on the use of the reflection seismology to investigate the subsurface structures and characterize active faults. The paper provides a descriptive overview, intended for a ...
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Michal Stefaniuk, Adam Cygal, Tomasz Mackowski, Michal Martus, Piotr Hadro, Krzysztof Pieniadz and Anna Maria Wachowicz-Pyzik
The paper presents the problem of generation and validation of Velocity Interval Depth (VID) models with the application of non-seismic geophysical and geological data. The study area is a part of the Carpathian Foredeep located close to its contact with...
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Feng Tian, Qingfeng Miao, Haibin Shi, Ruiping Li, Xu Dou, Jie Duan, Jing Liu and Weiying Feng
As an effective method to improve saline?alkali land, the drainage from subsurface pipes has been extensively studied in typical arid and semi-arid agricultural areas (Hetao Irrigation District). However, there are few studies on the improvement of subsu...
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Jin Zhang, Li Cheng, Yajun Wang and Chenjuan Jiang
Stratification and mixing of the water column is an important dynamic process in the estuary, which plays a significant role in the estuarine circulation, mass transport and energy exchange. Based on the multi-station synchronous observation data from 26...
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Feilong Lin, Chujin Liang, Tao Ding, Dingyong Zeng, Feng Zhou, Xiao Ma, Chenghao Yang, Hongliang Li, Beifeng Zhou, Chenggang Liu and Weifang Jin
The northern Andaman Sea (AS) continental shelf is unique due to the diverse marine ecosystem and existences of both hypoxia and internal tides, but limited in situ observations restrict our understanding of the hydrographic dynamic process. Based on the...
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Katherine Carol Swager, Suzanne Michelle Bourret, Gilles Y. Bussod, Noa Balaban, Hakim Boukhalfa, Ran Calvo, Ofra Klein-BenDavid, Dolan Lucero, Itay J. Reznik, Ravid Rosenzweig and Philip H. Stauffer
A scientific collaboration between the U.S. and Israel is underway to assess the suitability of a potential site for subsurface radioactive waste disposal in the Negev Desert, Israel. The Negev Desert has several favorable attributes for geologic disposa...
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Xiang Fang, Zhen Liu, Jing Li, Jianbin Lai, Huarui Gong, Zhigang Sun, Zhu Ouyang, Wenjun Dou and Keyu Fa
Salt patches (SPs) with surface salt accumulation pose a serious threat to agriculture in coastal saline lands. However, the migration and distribution of soil water and salt in SPs remain unclear due to complex water?salt transport dynamics. In this stu...
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Evgeny Yakovlev, Alina Kudryavtseva and Aleksandr Orlov
Dating young peatlands using the 210Pb dating procedure is a challenging task. The traditional 210Pb age models assume an exponential decline in radioactivity in line with depth in the peat profile. Lead exhibits considerable migratory capacity in Arctic...
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Fang Lu, Haoqing Zhang, Yonggang Jia, Wenquan Liu and Hui Wang
Sediments are an important sink for heavy metal pollutants on account of their strong adsorption capacity. Elevated content of Cu was observed in the Chengdao area of the Yellow River Delta, where the surface sediment is mainly silt and is prone to be li...
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Xinyi Wang, Weifang Qiao, Jing Chen, Xiaoman Liu and Fang Yang
Geothermal water samples taken from deep aquifers within the city of Kaifeng at depths between 800 and 1650 m were analyzed for conventional water chemical compositions and stable isotopes. These results were then combined with the deuterium excess param...
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Feng Wu, Xuefang Feng, Xuemei Liu, Di Wu, Songmei Zai and Linbao Liu
Stalk composite pipe (SCP), a novel product used for subsurface irrigation, is primarily composed of crop stalks, soil, and water. In subsurface SCP irrigation (SSI), comprehending the effects of burial furrow parameters on soil water movement is critica...
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Cuicui Yu, Haibin Shi, Qingfeng Miao, José Manuel Gonçalves, Yan Yan, Zhiyuan Hu, Cong Hou and Yi Zhao
In order to investigate the influence of freshwater fish ponds on water and salt transport in cultivated wasteland in salinized areas, a typical study area was selected in the middle and lower reaches of the Hetao Irrigation District in China in the Yich...
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Liqiang Cui, Jingwen Ma, Guixiang Quan, Jinlong Yan, James A. Ippolito and Hui Wang
Biochar has been widely studied to reduce multiple contaminant sources in one matrix (e.g., several heavy metals in soils), yet less attention has been paid to accelerating pesticide degradation while in the presence of any heavy metals, such as when kas...
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Rong Yang, Jianxi Ren, Xiaoke Chang and Kun Yang
The distribution of leachate directly impacts the safety and stability of the landfill, so it is important to research the distribution of seepage characteristics and migration patterns of leachate. The study aims to investigate the impact of heterogeneo...
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