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Keywords: sar image
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Proceedings Papers
Henning Heiberg-Andersen, Heidi Ytterstad Hindberg, Jørn Havås Mæland, Harald Johnsen, Torleif Lothe, Leonid Vasilyev
Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1211
... between images from SAR and Doppler radar measurements has recently been reported for the wake of the Westermost Rough wind farm in cases without stable atmospheric stratification. Inspired by this first of its kind comparison of ground-based Doppler radar and SAR images of wind farm wakes, we compare...
Proceedings Papers
Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-624
... Abstract In this paper, marine oil spills were detected from Synthetic Aperture Radar (SAR) images using two separate Artificial Neural Networks (ANNs) in sequence. The first ANN, i.e., the Back-Propagation Neural Network (BPNN), was employed to segment a SAR image for identifying the dark...
Proceedings Papers
Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-442
... ABSTRACT In this paper, the wind structure of hurricane Helene (2006) over the Atlantic Ocean is investigated from a C-band RADARSAT-1 synthetic aperture radar (SAR) image acquired on 20 September 2006. First, the characteristics, e.g., the center, scale and area of the hurricane eye (HE...
Proceedings Papers
Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-397
... island takuji waseda 1 ctd measurement narrow passage sar image tetsuji nakagawa 2 reservoir characterization potential site upstream oil & gas island Measuring the Kuroshio Current around Miyake Island, a Potential Site for Ocean Current Power Generation Tsubasa Kodaira1, Takuji Waseda1...
Proceedings Papers
Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-165
... ABSTRACT: This paper introduces an ice surface scattering model to explain the incident angle change effect. A method that derives the ice suface roughness from Radarsat-2 Scan SAR data is implemented based on the model, SAR image is suitable for monitoring the Arctic sea ice. As the wide...
Proceedings Papers
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-167
... ABSTRACT In this study, we present an approach to retrieve wave period, phase speed at the peak of the spectrum and thus the wave age from SAR image mode precision image (PRI) data around the coast of Japan. The in-situ NOWPHAS wave gauge data is used for matching up the SAR images...
Proceedings Papers
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-551
...), plotted with CHS bathymetry (dashed magenta), indicating two known areas of Zone 1A ice-bonded permafrost at which surficial ice overlies deeply frozen sediments, centered at 110 and 290 seconds. Note shallower bathymetry at these locations, corresponding to diagnostic SAR image features indicating...
Proceedings Papers
Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-213
... is satisfied. surface wave wind wave sar image break line kelvin wake ship wave upstream oil & gas tg? reservoir characterization external wave field kelvin arm ship wave-number function continuous solution ship wake wave field equation kelvin ship wake modification divergent wave...
Proceedings Papers
Paper presented at the The Fourteenth International Offshore and Polar Engineering Conference, May 23–28, 2004
Paper Number: ISOPE-I-04-319
... ENVISAT. contribution in-situ data information nonlinear contribution spectra algorithm propagation direction modulation sar image estimation inversion ocean surface hasselmann variation wave spectra artificial intelligence wave spectrum imagette spectrum wave height envisat...
Proceedings Papers
Paper presented at the The Thirteenth International Offshore and Polar Engineering Conference, May 25–30, 2003
Paper Number: ISOPE-I-03-043
... are presented which show single wind turbines. The derivation of high resolution wind fields from SAR images is explained and comparisons with numerical models are presented. INTRODUCTION During the past two decades weather forecast has greatly improved due to the consideration of geophysical parameters...
Proceedings Papers
Paper presented at the The Tenth International Offshore and Polar Engineering Conference, May 28–June 2, 2000
Paper Number: ISOPE-I-00-240
... of current patterns and fronts. Location, scale and rotation of eddies was determined from the SAR images. Also altimeter data from ERS and TOPEX POSEIDON satellites were analyzed in order to estimate geostrophic currents in the study area. The results showed that satellite SAR and altimeter data can play...
Proceedings Papers
Paper presented at the The Tenth International Offshore and Polar Engineering Conference, May 28–June 2, 2000
Paper Number: ISOPE-I-00-103
... conditions April-May 1998. The ARCDEV convoy was supported by near real-time ice information derived from ERS-2 and RADARSAT ScanSAR Synthetic Aperture Radar (SAR). Prior to and during the voyage a total of 28 satellite SAR images were acquired, analysed and transferred to the convoy before its arrival...
Proceedings Papers
Paper presented at the The Ninth International Offshore and Polar Engineering Conference, May 30–June 4, 1999
Paper Number: ISOPE-I-99-065
... observed from satellite SAR images are studied. Some interesting ship wakes are presented to classify various operation and processes involved. In addition, an overview of the SAR related projects for ocean applications will be discussed as well as the use of multi-sensors for operational coast monitoring...
Proceedings Papers
Paper presented at the The Ninth International Offshore and Polar Engineering Conference, May 30–June 4, 1999
Paper Number: ISOPE-I-99-253
... (of 220 m depth) and depression waves on the shelf break (of 500 m depth) in the same SAR image from May 4, 1998. Based on the numerical simulations, the evolution time for conversion from depression internal waves into elevation type internal waves is about 20 hours, and the wave propagation distance can...
Proceedings Papers
Paper presented at the The Ninth International Offshore and Polar Engineering Conference, May 30–June 4, 1999
Paper Number: ISOPE-I-99-257
... ABSTRACT: This paper addresses the problem of the detection and characterization of oceanic internal wave (IW) packets. We describe an efficient method for automatic extraction of IW features present in ocean SAR images. The utility of wavelet analysis as a tool for IW detection is first...
Proceedings Papers
Paper presented at the The Eighth International Offshore and Polar Engineering Conference, May 24–29, 1998
Paper Number: ISOPE-I-98-201
... scale. In this study, results from in-situ measurements of ice physical properties are used with coincident SAR images to evaluate the utility of the images in retrieving ice parameters. The parameters are grouped into the following scale-based categories: sub-pixel, intermediate, and mesoscale. The sub...
Proceedings Papers
Paper presented at the The Eighth International Offshore and Polar Engineering Conference, May 24–29, 1998
Paper Number: ISOPE-I-98-197
... ABSTRACT Synthetic Aperture Radar (SAR) images from ERS-1 have been used to study the characteristics of internal waves northeast of Taiwan. Rank-ordered packets of internal solitons propagating shoreward from the edge of the continental shelf were observed in the SAR images. The generation...
Proceedings Papers
Paper presented at the The Eighth International Offshore and Polar Engineering Conference, May 24–29, 1998
Paper Number: ISOPE-I-98-198
... slick satellite imagery original image pixel wavelet transform chemical spill gaussian-based wavelet analysis sar image length scale radarsat space agency two-dimensional gaussian-based wavelet analysis satellite remote oil slick delineated coastal oil spill Proceedings of the Eighth...
Proceedings Papers
Paper presented at the The Sixth International Offshore and Polar Engineering Conference, May 26–31, 1996
Paper Number: ISOPE-I-96-148
... INTRODUCTION Use of Synthetic Aperture Radar (SAR) images from satellites is a technology which is playing an increasingly important role in operational sea ice monitoring. SAR images, with a resolution of 100 m, can distinguish different ice types and map leads, polynyas, shear zones...
Proceedings Papers
Paper presented at the The Sixth International Offshore and Polar Engineering Conference, May 26–31, 1996
Paper Number: ISOPE-I-96-145
... and horizontal movements of shelf ices can be estimated. In our experiment, a number of SAR images obtained by ERS-1 satellite in three day time intervals are used. The evaluated topography is in good agreement with the topographic map. The differential interferometry has been used to estimate the tidal changes...
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