Results 11 to 20 of about 353,290 (260)

Depth Inversion from Wave Frequencies in Temporally Augmented Satellite Video

Remote Sensing, 2022
Optical satellite images of the nearshore water surface offer the possibility to invert water depths and thereby constitute the underlying bathymetry.
Matthijs Gawehn, Rafael Almar, Erwin W. J. Bergsma, Sierd de Vries, Stefan Aarninkhof   +4 more
doaj   +2 more sources

Fitting profile water depth to improve the accuracy of lake depth inversion without bathymetric data based on ICESat-2 and Sentinel-2 data

International Journal of Applied Earth Observation and Geoinformation, 2023
It is essential to study how to obtain precise bathymetric and mapping in inland lakes only from satellite data. In this study, the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) photon point cloud was first denoised by combining the manual interaction (MI) and density-based spatial clustering of applications with noise (DBSCAN) algorithm in ...
Hong Yang, Baojin Qiao, Shuowen Huang, Yulu Fu, Hengliang Guo   +4 more
openaire   +3 more sources

The Analysis of ETM Image's Spectral and Its Implication on Water Depth Inversion iniamen Bay [PDF]

Proceedings of the 2013 International Conference on Remote Sensing,Environment and Transportation Engineering, 2013
Dual-spectra ratio method is generally considered superior to single-spectra approach in the most previous studies for water depth inversion by ETM image. In this paper, the correlation between the ETM's spectral and the water depth is analyzed. TM2 gives the largest absolute correlation index in all the single-spectra and dual-spectral ratio.
Zhang Wenjing, Zeng Wenhua, Zhu Shouxian, Zhang Xiaodong   +3 more
openaire   +2 more sources

Depth inversion in shallow water based on nonlinear properties of shoaling periodic waves [PDF]

Coastal Engineering, 1998
Abstract Two depth inversion algorithms (DIA) applicable to coastal waters are developed, calibrated, and validated based on results of computations of periodic waves shoaling over mild slopes, in a two-dimensional numerical wave tank based on fully nonlinear potential flow (FNPF) theory.
S. Grilli
openaire   +3 more sources

Bathymetric mapping and estimation of water storage in a shallow lake using a remote sensing inversion method based on machine learning

International Journal of Digital Earth, 2022
Accurate lake depth mapping and estimation of changes in water level and water storage are fundamental significance for understanding the lake water resources on the Tibetan Plateau.
Hong Yang, Hengliang Guo, Wenhao Dai, Bingkang Nie, Baojin Qiao, Liping Zhu   +5 more
doaj   +2 more sources

A semianalytical ocean color inversion algorithm with explicit water column depth and substrate reflectance parameterization [PDF]

Journal of Geophysical Research: Oceans, 2015
AbstractA semianalytical ocean color inversion algorithm was developed for improving retrievals of inherent optical properties (IOPs) in optically shallow waters. In clear, geometrically shallow waters, light reflected off the seafloor can contribute to the water‐leaving radiance signal.
Mckinna, Lachlan I. W, Fearns, Peter R.C, Weeks, Scarla J, Werdell, P. Jeremy, Reichstetter, Martina, Franz, Bryan A, Shea, Donald M, Feldman, Gene C   +7 more
openaire   +4 more sources

Rapid advancements in large language models for quantitative remote sensing: The case of water depth inversion

Science of Remote Sensing
This study presents a comparative analysis of two advanced AI models, ChatGPT and ERNIE, in the context of water depth inversion. Utilizing satellite spectral data and in-situ bathymetric measurements collected from Rushikonda Beach, India, we processed ...
Zhongqiang Wu, Wei Shen, Zhihua Mao, Shulei Wu   +3 more
doaj   +2 more sources

Assessment of Multi-Spectral Imagery and Machine Learning Algorithms for Shallow Water Bathymetry Inversion

Redai dili, 2023
The eastern coastal zone of Hainan Island is an important scenic belt and concentrated area of tourism resources in Hainan Province. Due to natural factors such as sea level rise and human factors such as coastal reclamation, the ecosystem in this area ...
Wang Zhaofan, Ma Zicheng, Xiong Zhongzhao, Sun Tiancheng, Huang Zanhui, Fu Dinghui, Chen Liang, Xie Fei, Xie Cuirong, Chen Si   +9 more
doaj   +1 more source

SHALLOW BATHYMETRY ESTIMATION BASED ON LANDSAT 8 REMOTELY SENSED DATAAT BOHAI SEA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Bathymetry is a key variable in ocean monitoring and measurement research. It becomes more and more important for development of rapid method to invert shallow sea water depth.
D. J. Zhang, J. Zhan, C. X. Wang, G. Q. Zhou   +3 more
doaj   +1 more source

Water deep mapping from HJ-1B satellite data by a deep network model in the sea area of Pearl River Estuary, China

Open Geosciences, 2021
Remote sensing (RS) water depth inversion is an important technology and the method of water depth measurement. Taking the waters around the islands outside the Pearl River Estuary as an example, five optical RS depth inversion algorithms were introduced.
Zhao Xiaoning, Wang Daqing, Xu Haoli, Shi Yue, Deng Zhengdong, Ding Zhibin, Liu Zhixin, Xu Xingang, Lu Zhao, Wang Guangyuan, Cheng Zijian   +10 more
doaj   +1 more source