Results 51 to 60 of about 524 (137)

Climate Change and Topography Drive the Expansion of Betula ermanii in the Alpine Treeline Ecotone of the Changbai Mountain

Ecology and Evolution, Volume 15, Issue 5, May 2025.
Over the past 20 years, the expansion rate of Betula ermanii in the alpine ecotone of Changbai Mountain varied with mountain aspects. We found that interactions between climate and topographic factors played a more significant role in B. ermanii's expansion than any single dominant factor.
Yingyi Chen, Yongfeng Gu, Wen J. Wang, Lei Wang, Xiaodong Li, Shengwei Zong, Mai‐He Li, Zhengfang Wu, Hong S. He, Yu Cong, Ming Jiang   +10 more
wiley   +1 more source

Paleogeography of the Southern Tarim Terrane Revealed by Neoproterozoic Mafic Dyke Swarm in Altyn

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 3, March 2025.
Abstract Using high‐resolution remote sensing images and detailed field investigations, this study provides the spatiotemporal distribution and geometry of the Neoproterozoic giant mafic dyke swarm in the southeastern Tarim Craton, which is crucial for reconstructing the paleogeographic position of the Tarim Craton within the Rodinia supercontinent ...
Xian‐Tao Ye, Wen‐Jun Hu, Chuan‐Lin Zhang, Wei Gan, Rui‐Chen Gao, Ming‐Can Yang   +5 more
wiley   +1 more source

Wind vector retrieval from Gaofen-3 SAR imagery using the method of iterative line fitting in image power spectrum domain

All Earth
The Gaofen-3 (GF-3) is a Chinese Synthetic Aperture Radar (SAR) satellite primarily designed for monitoring marine dynamic environments. Compared to spaceborne scatterometers, it can monitor sea surface wind fields with higher spatial resolution ...
Xuetong Xie, Jinlan Zhang, Yan Zheng, Kehai Chen   +3 more
doaj   +1 more source

Combined Use of GF-3 and Landsat-8 Satellite Data for Soil Moisture Retrieval over Agricultural Areas Using Artificial Neural Network

Advances in Meteorology, 2018
Soil moisture is the basic condition required for crop growth and development. Gaofen-3 (GF-3) is the first C-band synthetic-aperture radar (SAR) satellite of China, offering broad land and ocean imaging applications, including soil moisture monitoring ...
Qingyan Meng, Linlin Zhang, Qiuxia Xie, Shun Yao, Xu Chen, Ying Zhang   +5 more
doaj   +1 more source

Geo-Positioning Accuracy Improvement of Multi-Mode GF-3 Satellite SAR Imagery Based on Error Sources Analysis

Sensors, 2018
The GaoFen-3 (GF-3) satellite is the only synthetic aperture radar (SAR) satellite in the High-Resolution Earth Observation System Project, which is the first C-band full-polarization SAR satellite in China.
Niangang Jiao, Feng Wang, Hongjian You, Xiaolan Qiu, Mudan Yang   +4 more
doaj   +1 more source

Detection of Aerial Vehicles Using Satellite Imagery: Comparative Analysis of U‐Net Segmentation Model and YOLO Object Detection Model

International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
In the contemporary defense industry and the realm of air traffic safety, the identification of aircraft on land and in the air is of paramount importance. Contemporary radar systems have the capacity to track aircraft; however, these systems are inherently dependent on human intervention, thereby introducing a heightened risk of undesirable events ...
Gokalp Cinarer, Yavuz Selim Taspinar, Mustafa Zeybek, Zhiguang Song   +3 more
wiley   +1 more source

Retrieval of Significant Wave Height in Coastal Seas of China from GaoFen-3 Satellites Based on Deep Learning

Remote Sensing
The acquisition of significant wave height (SWH) in coastal seas is significantly important to human activities. The Gaofen-3 (GF-3) satellites, comprising GF-3, GF-3B and GF-3C, are independently developed operational SAR of China, capable of providing ...
Fengjia Sun, Xing Li, Xiao-Ming Li, Yongzheng Ren, Ke Wu   +4 more
doaj   +1 more source

Spatial Distribution of Lufeng Dinosaur Valley Outcrops Based on the GF‐5 Hyperspectral OS–SPA–SVM Model

Journal of Spectroscopy, Volume 2025, Issue 1, 2025.
This study presents a novel approach to identifying the spatial distribution of geological outcrops using remote sensing, with the Lufeng Dinosaur Valley in China as the focal area. We integrate GF‐5 hyperspectral imagery with the automated morphological endmember extraction–pure pixel index (AMEE–PPI) algorithm to improve endmember extraction accuracy.
Lin Hu, Yu Lu, Shu Gan, Xiping Yuan, Cheng Chen, Zhifu Zhu, K. S. V. Krishna Rao   +6 more
wiley   +1 more source

GF-3 SAR Ocean Wind Retrieval: The First View and Preliminary Assessment

Remote Sensing, 2017
Gaofen-3 (GF-3) is the first Chinese civil C-band synthetic aperture radar (SAR) launched on 10 August 2016 by the China Academy of Space Technology (CAST), which operates in 12 imaging modes with a fine spatial resolution up to 1 m.
He Wang, Jingsong Yang, Alexis Mouche, Weizeng Shao, Jianhua Zhu, Lin Ren, Chunhua Xie   +6 more
doaj   +1 more source

Multi‐Scale Soil Salinization Dynamics From Global to Pore Scale: A Review

Reviews of Geophysics, Volume 62, Issue 4, December 2024.
Abstract Soil salinization refers to the accumulation of water‐soluble salts in the upper part of the soil profile. Excessive levels of soil salinity affects crop production, soil health, and ecosystem functioning. This phenomenon threatens agriculture, food security, soil stability, and fertility leading to land degradation and loss of essential soil ...
Nima Shokri, Amirhossein Hassani, Muhammad Sahimi   +2 more
wiley   +1 more source