Results 51 to 60 of about 5,938 (229)

The importance of Enrichment Factor (EF) and Geoaccumulation Index (Igeo) to evaluate the soil contamination [PDF]

, 2016
Heavy metals are natural constituents of soils and their concentration varies depending on parental materials. In the last years, the content of heavy metal in soils has increased due to human activities as: distribution of fertilizers, pesticides ...
BARBIERI, Maurizio
core   +2 more sources

Types, characteristics and effects of natural fluid pressure fractures in shale: A case study of the Paleogene strata in Eastern China

Petroleum Exploration and Development, 2016
Paleogene organic-rich shales from the Dongying Sag and Zhanhua Sag of Jiyang Depression in Bohai Bay Basin and Northern Jiangsu Basin in Eastern China are studied, to categorize the types and characteristics of natural fluid pressure fractures and their
Cunfei MA, Chunmei DONG, Guoqiang LUAN, Chengyan LIN, Xiaocen LIU, Derek ELSWORTH   +5 more
doaj   +1 more source

Continental lacustrine fine-grained lithofacies, assemblage and geological significance of unconventional petroleum: A case study of the Paleogene of the 4th member of the Shahejie formation in the Jiyang depression

Energy Exploration & Exploitation, 2023
Taking the upper sub-member of Sha 4 in Well Fanye 1 and Well Niuye 1 in Dongying Sag, Jiyang Depression, Bohai Bay Basin as a typical example, this paper adopts the method of combining macro and micro laminar characterization and complementing each ...
Ying Li, Zeng-Xue Li, Dong-Dong Wang, Guang-Zeng Song, Da-Wei Lv, Lusheng-Yin, Hai-Yan Liu, Chun-Hua Xu, Fan-Fei Kong, Qiao-Yu Han   +9 more
doaj   +1 more source

Stratigraphy and reservoir quality of the turbidite deposits, western sag, Bohai bay, China P.R. [PDF]

, 2014
Stratigraphic and subtle reservoirs such as pinchouts, sand lenses and unconformities have been discovered in Bohai basin. These reservoirs occur in sub-basins and sag structures called depressions.
Ako, Bankole D., Rotimi, Oluwatosin J., Zhenli, Wang   +2 more
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Hotspots, trends, and regional focus on oil or gas exploration: A bibliometric comparative study

Deep Underground Science and Engineering, Volume 5, Issue 1, Page 296-311, March 2026.
This paper explores the research trends in global oil and gas exploration through the bibliometric analysis of 3460 articles collected from the Web of Science database on oil and gas exploration published from 2013 to 2023. The research hotspots, objects, regional distribution, methods, and evaluation methods of oil and gas exploration are analyzed and
Jihong Wang, Zhongkai Li, Jianguo Wang, Zhiqiang Li   +3 more
wiley   +1 more source

Cyclostratigraphic Analysis and Depositional Environment Evolution of the Third Member of Eocene Shahejie Formation in the Laizhou Bay Sag, Southern Bohai Bay

Journal of Marine Science and Engineering
This study conducts a cyclostratigraphic analysis of the third member of the Eocene Shahejie Formation (Es3) in the Laizhou Bay Sag, Bohai Bay Basin, to investigate the influences of astronomically driven climate variations on sea-level changes ...
Jun-E Ni, Taiju Yin, Yuqing Zhang, Peng Liu, Zhongheng Sun, Chengcheng Zhang   +5 more
doaj   +1 more source

Winter‐to‐Winter Sea Surface Temperature Anomaly Reemergence in the Yellow Sea

Journal of Geophysical Research: Oceans, Volume 131, Issue 3, March 2026.
Abstract The reemergence of winter sea surface temperature anomalies (SSTAs) serves as an effective oceanic memory mechanism, linking winter SSTs across consecutive years in mid‐latitude deep oceans. However, its existence and potential role in modulating SSTA variability in continental shelf seas have remained largely unexplored.
Xingchuan Liu, Fei Yu, Zifei Chen, Feng Nan, Qiang Ren, Anqi Xu, Xinyuan Diao   +6 more
wiley   +1 more source

The geochemical evidences of sulphur oil sources in the BZ35/36 structures of the Huanghekou Sag, Bohai Bay Basin, China

Petroleum Research, 2019
Crude oils in the BZ35/BZ36 fields found within the Paleogene Dongying and Shahejie formations in the Huanghekou Sag of the Bohai Bay Basin, China have generally high density, viscosity, and sulfur content.
Qiang Fu, Binbin Liu, Chengmin Niu, Shijie Zhao   +3 more
doaj   +1 more source

PICES Climate Change and Carrying Capacity Workshop on the Development of Cooperative Research in Coastal Regions of the North Pacific, October 17-18, 1997, Pusan, Republic of Korea [PDF]

, 1998
(PDF contains 53 ...

core  

A Stacking Ensemble Model for Specific Yield Prediction: Framework Development and Application to Groundwater Storage Change Estimation in the North China Plain

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Specific yield (SY) is a key parameter in estimating groundwater storage change. Accurately predicting SY in unconfined aquifers remains challenging, as SY varies with groundwater‐level fluctuations and unsaturated‐zone moisture fluxes. This challenge is particularly evident in the North China Plain (NCP), which has experienced substantial ...
Zhenyue Han, Aixi Gong, Haijun Hu, Fawen Li, Yong Zhao   +4 more
wiley   +1 more source