Results 61 to 70 of about 15,912 (215)

Neglected shoreward reintroduction of pre-aged sedimentary organic carbon in a large river- and tide-dominated marginal sea

Communications Earth & Environment
The coastal to inner-shelf muddy belt and offshore tidal sand ridges of the East China Sea (ECS) constitute a coupled sedimentary pattern during the postglacial deposition, challenging the prevailing paradigm of seaward, unidirectional dispersal of ...
Lilei Chen, Feng Li, Jian Liu, Yoshiki Saito, Shuwen Sun, Jiandong Qiu, Xingliang He, Bin Chen, Gang Tong, Maogang Qin   +9 more
doaj   +1 more source

Acoustic detection of seabed hydrocarbon seepage in the north depression of South Yellow Sea Basin

Petroleum Exploration and Development, 2009
The full-covered Side-Scan Sonar and high-resolution seismic survey method is initially used to research on the seabed hydrocarbon seepage in the survey area, for the purpose of the following: clarifying the shallow acoustic features related to seabed ...
Zhao Tiehu, Zhang Xunhua, Wang Xiutian, Meng Xiangjun   +3 more
doaj   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

Deep Underground Science and Engineering, EarlyView.
This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh, Tonni Agustiono Kurniawan, Christia Meidiana, Abdelkader Anouzla, Faissal Aziz, Imran Ali, Joan Cecilia C. Casila, M. Imran Khan, Dongdong Zhang, Meihui Jiang, Mohd Hafiz Dzarfan Othman, Md Munir Hayet Khan, Kasun Kumara Dissanayake   +12 more
wiley   +1 more source

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Geomorphology of the Axial Channel (Southern Bight, North Sea)

Journal of Maps
This study presents a transnational geomorphological map of the Southern Bight, North Sea, using bathymetric data (EMODnet – c. 115 m horizontal resolution; UKHO – 4 m horizontal resolution). Based on the erosional and/or depositional relationship of the
Morgan Vervoort, Ruth Plets, Despina Kyriakoudi, Tine Missiaen, Marc De Batist   +4 more
doaj   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Geophysical Data Stewardship in the 21st Century at the National Geophysical Data Center (NGDC)

Data Science Journal, 2013
The World Data Center for Geophysics in Boulder, Colorado is hosted by the National Geophysical Data Center (NGDC). NGDC's vision is to be the world's leading provider of geophysical and environmental data, information, and products. NGDC's mission is to
E A Kihn, C G Fox
doaj   +1 more source

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source