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On the analysis of a time series of X-band TerraSAR-X SAR imagery over oil seepages

Nunziata, Ferdinando and de Macedo, Carina Regina and Buono, Andrea and Velotto, Domenico and Migliaccio, Maurizio (2019) On the analysis of a time series of X-band TerraSAR-X SAR imagery over oil seepages. International Journal of Remote Sensing, 40 (9), pp. 3623-3646. Taylor & Francis. doi: 10.1080/01431161.2018.1547933. ISSN 0143-1161.

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Official URL: https://doi.org/10.1080/01431161.2018.1547933

Abstract

A large time series of 42 dual-polarimetric co-polarized TerraSAR-X (TSX) StripMap Synthetic Aperture Radar (SAR) measurements are exploited to monitor a well-known oil seep area, i.e., the Taylor Energy site in the Gulf of Mexico. A comprehensive scattering analysis is undertaken to assess the impact of SAR imaging parameters (polarization, angle of incidence - AOI, noise floor) and environmental conditions (wind speed - WS, oil properties) on single-polarization SAR-based sea oil seep observation. The main goal of this study is to evaluate the reliability of the scattering-based information derived from the time series of TSX SAR imagery. A two-scale backscattering model is considered to give a physical framework that supports a better understanding of the effects of the above-mentioned factors. Experimental results showed that the high TSX noise floor significantly limits a reliable interpretation of the slick-free sea surface and oil seep backscattering at AOIs larger than 34 and 26, respectively, since they are contaminated by noise. Hence, it is shown that, at larger AOIs, the joint contribution of noisy SAR measurements and low oil backscattering does not result in a larger oil/sea separability. The latter is not remarkably influenced by polarization and WS, under low-to-moderate conditions. Experiments also demonstrate that, when reliable SAR measurements are available, sea oil seep backscattering is affected by the oil's damping properties more than its concentration in the water column. The time variability of the polluted area is also estimated using the time series of TSX imagery and the obtained results agree with independent analysis undertaken on the same test site.

Item URL in elib:https://elib.dlr.de/121692/
Document Type:Article
Additional Information:To cite this article: F. Nunziata, C. R. de Macedo, A. Buono, D. Velotto & M. Migliaccio (2019) On the analysis of a time series of X–band TerraSAR–X SAR imagery over oil seepages, International Journal of Remote Sensing, 40:9, 3623-3646, DOI: 10.1080/01431161.2018.1547933
Title:On the analysis of a time series of X-band TerraSAR-X SAR imagery over oil seepages
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Nunziata, FerdinandoUniversità di Napoli Parthenope, Dipartimento di Ingegneria, 80143 Napoli, ItalyUNSPECIFIED
de Macedo, Carina ReginaUniversità di Napoli Parthenope, Dipartimento di Ingegneria, 80143 Napoli, ItalyUNSPECIFIED
Buono, AndreaUniversità di Napoli Parthenope, Dipartimento di Ingegneria, 80143 Napoli, ItalyUNSPECIFIED
Velotto, DomenicoDomenico.Velotto (at) dlr.dehttps://orcid.org/0000-0002-8592-0652
Migliaccio, Mauriziomaurizio.migliaccio (at) uniparthenope.itUNSPECIFIED
Date:2019
Journal or Publication Title:International Journal of Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:40
DOI :10.1080/01431161.2018.1547933
Page Range:pp. 3623-3646
Publisher:Taylor & Francis
ISSN:0143-1161
Status:Published
Keywords:backscattering, oil seepages, TerraSAR-X, time series, SAR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - SAR methods
Location: Bremen , Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Kaps, Ruth
Deposited On:29 Nov 2018 11:26
Last Modified:01 Jan 2020 03:00

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