Results 61 to 70 of about 653,638 (207)

Dune Crestline Mapping With Deep Learning Reveals Large‐Scale Dune Patterns in NW China

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Dune crestlines encode sediment transport dynamics and atmospheric forcing, yet their large‐scale quantification has been constrained by labor‐intensive mapping or limited resolution. Here we develop an attention‐augmented U‐Net model to automatically extract crestlines from ∼1 m resolution satellite imagery.
Peng Liang, Shurui Gu, Xinming Du, Hangyi Zhao, Haixia Gu, Kailun Pan, Xiaoping Yang   +6 more
wiley   +1 more source

An Improved Dust Emission Modeling With Multiple Endmember Spectral Mixture Analysis

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Traditional dust emission schemes typically rely on photosynthetic vegetation (PV) alone when parameterizing key surface properties. Here, we integrate five endmembers from the multiple endmember spectral mixture analysis (MESMA), namely PV, non‐photosynthetic vegetation, bare soil, dark surface, and ice/snow (IS), into a well‐established dust
Qidi Pan, Junran Li, Qiangqiang Sun, Danfeng Sun, Jinbao Li, Heqiang Du, Huijie Xiao, Huixin Zhu, Lexin Li   +8 more
wiley   +1 more source

Onset of Thrusting at ca. 23 Ma in East Kunlun Mountains, Northern Tibet, Recorded by Syntectonic Strata

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract The timing of Cenozoic deformation in the East Kunlun Mountains, northern Tibet, is crucial for understanding plateau growth but remains disputed due to the scarcity of direct chronological constraints on specific tectonic structures. Here, we present a high‐density‐sampling magnetostratigraphic record from the Xiaohongshan section, interior ...
Leyi Li, Hong Chang, Balázs Bradák, Xiaoke Qiang   +3 more
wiley   +1 more source

Particle-size Characteristics and Sedimentary Environment of Dune Sediments in Southwestern Qaidam Basin

Shuitu baochi tongbao, 2022
[Objective] The particle size characteristics and sedimentary environment of dune sediments in the southwest margin of Qaidam Basin were analyzed in order to provide basic data to support sand control and safe operation of the Golmud-Korla Railway ...
Wang Meng, Gao Xuemin, Qu Xin, Liu Zhengxin, Li Jiyan   +4 more
doaj   +1 more source

Groundwater Rise Sustains the World's Largest Alpine Water System Under Global Warming

Advanced Science, Volume 13, Issue 60, 28 October 2026.
Shallow groundwater depth (SGWD) across the non‐permafrost plains of the Qinghai–Xizang Plateau decreased at averagely 0.02 m year−1, adding 31.44 Gt of freshwater storage from 2000 to 2020 and sustaining ∼53 500 km2 of alpine ecosystems. A vadose‐zone capacity of 426.6 Gt reveals these aquifers as promising reservoirs, highlighting groundwater's ...
Jianqing Du, Zhixiang Niu, Yanfen Wang, Shirui Zhou, Youqing Yang, Xiang Wei, Haishan Niu, Yitao Zhang, Anquan Xia, Yali Liu, Yanbin Hao, Kai Xue, Bingfang Wu, Xinquan Zhao, Tandong Yao, Yiyu Chen   +15 more
wiley   +1 more source

Spatiotemporal Heterogeneity of Landscape Patterns and Ecological Risk Under Changing Human Activity in the Qilian Mountains

Ecology and Evolution, Volume 16, Issue 10, October 2026.
This study investigated the spatiotemporal patterns of human activity intensity (HAI), landscape patterns, and landscape ecological risk (LER) in the Qilian Mountains from 2000 to 2020, and examined the spatial relationships between HAI and landscape patterns using spatial autocorrelation and geographically weighted regression.
Shengji Jiang, Heng Ren, Hua Xu, Tao Zhou   +3 more
wiley   +1 more source

RSEI or MRSEI? Comment on Jia et al. Evaluation of Eco-Environmental Quality in Qaidam Basin Based on the Ecological Index (MRSEI) and GEE. Remote Sens. 2021, 13, 4543

Remote Sensing, 2022
Recently, Jia et al. employed the index, modified remote sensing ecological index (MRSEI), to evaluate the ecological quality of the Qaidam Basin, China. The MRSEI made a modification to the previous remote sensing-based ecological index (RSEI), which is
Hanqiu Xu, Weifang Duan, Wenhui Deng, Mengjing Lin   +3 more
doaj   +1 more source

Analysing Large‐Scale Patterns of Linear Dune Morphology and Their Environmental Controls in the South‐Western Kalahari

Earth Surface Processes and Landforms, Volume 51, Issue 10, October 2026.
Novel, semi‐automated techniques enable the mapping and analysis of dune morphology and its potential environmental controls across the south‐western Kalahari's extensive linear dune field. Relationships between morphometrics and controls vary regionally, for example, the effect of valleys on main dune orientation or orientational variability ...
Maike Nowatzki, David S. G. Thomas, Richard M. Bailey   +2 more
wiley   +1 more source

Evaluation of Circular Economy Based on Emergy Theory——A Case of Qaidam Basin

Shuitu baochi yanjiu, 2011
Based on emergy analysis,the development of circular economy in Qaidam basin is evaluated from such five aspects as emergy flow,emergy economy,resource input and output,environmental pressure and comprehensive index.The paper analyzes the condition of ...
LIU Zhi-jie1, CHEN Ke-long1, ZHAO Zhi-qiang2, SU Mao-xin1, HAN Yan-li1   +4 more
doaj  

Machine Learning Approaches for Predicting Total Organic Carbon From Petrophysical Well Logs in the Wufeng–Longmaxi Shale, Southeast Sichuan Basin, China

Geoscience Data Journal, Volume 13, Issue 4, October 2026.
This study demonstrates the application of machine learning models—Random Forest, XGBoost, and Multiple Linear Regression—to predict Total Organic Carbon (TOC) from well logs, significantly improving TOC prediction accuracy and reliability across diverse geological settings compared to traditional log‐based methods.
Haseeb Ahmad, Jiang Shu, Naveed Rehman, Muhammad Asad, Muhammad Tariq, Aqib Saeed, Attiqullah Ayaz   +6 more
wiley   +1 more source