Results 1 to 10 of about 87,202 (211)

A Combined Machine Learning and Residual Analysis Approach for Improved Retrieval of Shallow Bathymetry from Hyperspectral Imagery and Sparse Ground Truth Data

Remote Sensing, 2020
Mapping shallow bathymetry by means of optical remote sensing has been a challenging task of growing interest in recent years. Particularly, many studies exploit earlier empirical models together with the latest multispectral satellite imagery (e.g ...
Evangelos Alevizos
exaly   +3 more sources

PlanetScope and Landsat 8 Imageries for Bathymetry Mapping

Journal of Marine Science and Engineering, 2020
Bathymetry has a great importance in coastal projects. Obtaining proper bathymetric information is necessary for navigation, numerical modeling, and coastal zone management studies.
Mostafa Ahmed
exaly   +3 more sources

Satellite Derived Bathymetry Using Machine Learning and Multi-Temporal Satellite Images

Remote Sensing, 2019
Shallow water bathymetry is important for nautical navigation to avoid stranding, as well as for the scientific simulation of high tide and high waves in coastal areas.
Tatsuyuki Sagawa, Tsutomu Yamanokuchi
exaly   +3 more sources

Integration of the latest Digital Terrain Model (DTM) with Synthetic Aperture Radar (SAR) Bathymetry

Journal of Degraded and Mining Lands Management, 2021
Topography and bathymetry integration is one of the essential things in providing height data. So far, the topography and bathymetry problems are the lack of height data availability, not up to date, and low vertical accuracy.
Atriyon Julzarika, Trias Aditya, S Subaryono, H Harintaka, Ratna Sari Dewi, Luki Subehi   +5 more
doaj   +1 more source

Bathymetry Refinement over Seamount Regions from SAR Altimetric Gravity Data through a Kalman Fusion Method

Remote Sensing, 2023
Seafloor topography over seamount areas is crucial for studying plate motions, seafloor seismicity, and seamount ecosystems. However, seamount bathymetry modeling is difficult due to the complex hydrodynamic environment, biodiversity, and scarcity of ...
Yihao Wu, Junjie Wang, Yueqian Shen, Dongzhen Jia, Yu Li   +4 more
doaj   +1 more source

Variational Assimilation of Surface Wave Data for Bathymetry Reconstruction. Part II: Second Order Adjoint Sensitivity Analysis

Tellus: Series A, Dynamic Meteorology and Oceanography, 2022
Data assimilation methods have been proposed as a technique for reconstructing ocean bathymetry from observations of surface waves. To better understand this technique, we use second order adjoint (SOA) variational analysis to derive the sensitivity of ...
R. A. Khan, N. K.-R. Kevlahan
doaj   +1 more source

Evaluating Accuracy of HY-2A/GM-Derived Gravity Data With the Gravity-Geologic Method to Predict Bathymetry

Frontiers in Earth Science, 2021
For the first time, HY-2A/GM-derived gravity anomalies determined with the least-squares collocation method and ship-borne bathymetry released from the National Centers for Environmental Information (NCEI) are used to predict bathymetry with the gravity ...
Zhijie Wei, Jinyun Guo, Chengcheng Zhu, Jiajia Yuan, Xiaotao Chang, Bing Ji   +5 more
doaj   +1 more source

Nearshore Benthic Mapping in the Great Lakes: A Multi-Agency Data Integration Approach in Southwest Lake Michigan

Remote Sensing, 2021
The Laurentian Great Lakes comprise the largest assemblage of inland waterbodies in North America, with vast geographic, environmentally complex nearshore benthic substrate and associated habitat.
Molly K. Reif, Brandon S. Krumwiede, Steven E. Brown, Ethan J. Theuerkauf, Joseph H. Harwood   +4 more
doaj   +1 more source

A Review of Data Cleaning Approaches in a Hydrographic Framework with a Focus on Bathymetric Multibeam Echosounder Datasets

Geosciences, 2020
Automatic cleaning of MultiBeam EchoSounder (MBES) bathymetric datasets is a critical issue in data processing especially with the objective of nautical charting. A number of approaches have already been investigated in order to provide solution in views
Julian Le Deunf, Nathalie Debese, Thierry Schmitt, Romain Billot   +3 more
doaj   +1 more source

Clear Waters, Stronger Depths: Advancing Bathymetric Lidar Through Community Practices [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The science of mapping beneath the water's surface with lasers is no longer novel, but its relevance has never been greater. Over the past decade, bathymetric lidar has evolved from a niche tool into a diverse ecosystem of sensors and operators, tailored
N. D. Johnson, J. M. Wozencraft, C. L. Macon   +2 more
doaj   +1 more source