This work deals with the question of sea state monitoring using marine X-band radar images and focuses its attention on the problem of sea depth estimation. We present and discuss a technique to estimate bathymetry by exploiting the dispersion relation for surface gravity waves. This estimation technique is based on the correlation between the measured and the theoretical sea wave spectra and a...

Multispectral imaging (MSI) data collected at multiple angles over shallow water provide analysts with a unique perspective of bathymetry in coastal areas. Observations taken by DigitalGlobe’s WorldView-2 (WV-2) sensor acquired at 39 different view angles on 30 July 2011 were used to determine the effect of acquisition angle on bathymetry derivation. The site used for this study was Kailua Bay ...

17 run-up algorithm. The code requires as input detailed information on seismic source mechanisms, gridded bathymetric data information for the open sea propagation, and a set of gridded Digital Elevation Models (DEM) containing bathymetry and topography for use during the inundation phase. Accurate bathymetry and topography data for Rhodes were purchased/collected from various sources, GIS-pro...

Remote sensing techniques in real time could be a major tool for bathymetry mapping which could produce synoptic data overlarge areas at extremely low cost. In contrast, conventional techniques such as singleor multi-beam ship-borne echoes are costly and time-consuming, especially when large areas are being surveyed (Marghany et al., 2009b). The ocean bathymetry features can image by radar in c...

A three dimensional ocean circulation model (Princeton Ocean Model) is utilised to study the thermohaline variability of the eastern Arabian Sea associated with changes in the three input bathymetry data sets, viz. ETOPO5 (E5), Modified ETOPO5 (ME5) and ME5 further modified based on actual fine resolution data collected using Multibeam echo-sounder (MEN5). The temperature and salinity measureme...

In 2018, the National Aeronautics and Space Administration (NASA) is scheduled to launch the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2), with a new six-beam, green-wavelength, photon-counting lidar system, Advanced Topographic Laser Altimeter System (ATLAS). The primary objectives of the ICESat-2 mission are to measure ice-sheet elevations, sea-ice thickness, and global biomass. Howe...

During the last decade, several studies have focused on the use of passive multispectral remote sensing to derive the bathymetry in coastal zone. In particular, data acquired with the SPOT and the Landsat TM/ETM+ sensors have been used to derive models of bathymetry at medium scales. Until now, the successful application of passive remote sensing techniques to bathymetry mapping was restricted ...

Techniques for deriving estimated bathymetry from satellite data are well established; however, use of this product in complex terrains is limited. Accurate bathymetry is essential in the construction of hydrodynamic models and satellite-derived bathymetry is a strong candidate for use in coastal and shallow waters. A case study of Palau is presented which uses satellite-derived bathymetry as i...

The overall goal of this work is to refine, validate, and transition a spectrum-matching and look-uptable (LUT) technique for rapidly inverting remotely sensed hyperspectral reflectances to extract environmental information such as water-column optical properties, bathymetry, and bottom classification. The work also seeks to combine hyperspectral imagery and LIDAR bathymetry to improve the capa...

This report summarizes written and oral contributions from many interested scientists, including 46 participants (Appendix 1) at a workshop executive summary 1 mapping the ocean floor 3 the need for bathymetry from space 3 sensing bathymetry from space 4 new science 6 ocean circulation, mixing, and climate 6 beyond plate tectonics 10 forecasting tsunamis 14 other applications of improved bathym...