Results 91 to 100 of about 2,221 (193)

Institutional mapping and causal analysis of avalanche vulnerable areas based on multi-source data

, 2023
Avalanche disaster is a major natural disaster that seriously threatens the national infrastructure and personnel's life safety. For a long time, the research of avalanche disaster prediction in the world is insufficient, there are only some basic models
Kang, Zhizhong, Ma, Bingqi, Zhou, Zexuan, Zhu, Jianwei   +3 more
core  

Relationship Between Plant Diversity and Soil Environment in Karst Urban Remnant Mountains: A Comparative Analysis of Two Types

Ecology and Evolution, Volume 15, Issue 3, March 2025.
The transformation of karst urban remnant mountains into mountain parks had not only simplified the composition of plant species and reduced biodiversity, but also changed the characteristics of soil environmental factors and their distribution pattern with plant diversity, thus reshaping their mutual relationship.
Shujun Liu, Zhijie Wang, Lifei Yu, Gilbert Kumilamba, Gang Xie   +4 more
wiley   +1 more source

Contrastive Learning for Urban Land Cover Classification With Multimodal Siamese Network [PDF]

The Earth observation era has bestowed dividends upon supervised land cover classification based on deep learning and optical data. However, limitations, such as insufficient spectral information and reduced quality during inclement weather for optical ...
Lin, Yinyi, Ling, Jing, Liu, Rui, Zhang, Hongsheng   +3 more
core   +1 more source

A virtual coastal band-driven optimization-based bathymetric approach (VOBA) for optically shallow water with multispectral imagery

GIScience & Remote Sensing
Bathymetry mapping is important for detecting underwater topography. For optically shallow waters, the use of satellite-based high-spatial-resolution imagery (Such as Gaofen-2, Ziyuan-3, Worldview-2) and historical medium-spatial-resolution imagery ...
Yongming Liu, Shilin Tang, Bin Cao, Zhantang Xu, Xulong Liu, Kai Zeng, Yuye Huang, Wendi Zheng   +7 more
doaj   +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

Georeferencing of Satellite Images with Geocoded Image Features [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Currently, using digital orthophoto map (DOM) and digital elevation model (DEM) as reference to achieve geometric positioning of newly acquired satellite images has become a popular photogrammetric approach.
Y. Zhang, H. Li, J. Yu, P. Tao, P. Tao
doaj   +1 more source

Green Space Morphology and School Myopia in China [PDF]

Importance: China has experienced both rapid urbanization and major increases in myopia prevalence. Previous studies suggest that green space exposure reduces the risk of myopia, but the association between myopia risk and specific geometry and ...
Congdon, Nathan, Ding, Xiaohu, Dong, Guanghui, Guo, Liang, He, Huagui, He, Mingguang, Jiang, Zhiyu, Li, Xuelong, Liao, Huipeng, Lin, Haotian, Lin, Hualiang, Morgan, Ian George, Spencer, Bryan, Wang, Xun, Yang, XiaoWei, Yang, Yahan, Zhang, Qingling, Zhang, Xingying, Zhao, Lanqin   +18 more
core   +2 more sources

Estimating Gully Erosion Induced by Heavy Rainfall Events Using Stereoscopic Imagery and UAV LiDAR

Remote Sensing
Gully erosion, driven by the interplay of natural processes and human activities, results in severe soil degradation and landscape alteration, yet approaches for accurately quantifying erosion triggered by extreme precipitation using multi-source high ...
Lu Wang, Yuan Qi, Wenwei Xie, Rui Yang, Xijun Wang, Shengming Zhou, Yanqing Dong, Xihong Lian   +7 more
doaj   +1 more source

A novel water optical types framework for Chinese inland waters with the application of multitype satellite sensor

International Journal of Digital Earth
Optical Water Type (OWT) analysis is crucial for comprehending water composition and quality, key factors in assessing water quality over extensive areas. However, China’s inland waters lack a standardized system for such analysis.
Ruidan Sang, Yaping Wang, Fangfang Zhang, Shenglei Wang, Junsheng Li   +4 more
doaj   +1 more source

Comparison of BPNN and Dual-Branch CNN for Significant Wave Height Estimation From Polarimetric Gaofen-3 SAR Wave Mode Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The present study utilizes the backward propagation neural network (BPNN) and the dual-branch convolutional neural network (DB-CNN) algorithms to construct models for estimating significant wave height (SWH) from polarimetric Gaofen-3 SAR wave mode data, using a dataset of 11 164 images that are collocated with SWH from the European Centre for Medium ...
Qiushuang Yan, Chenqing Fan, Junmin Meng, Tianran Song, Jie Zhang, Weifu Sun   +5 more
openaire   +2 more sources