elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

Analysis of the Oil Seep-affected Sea Surface Microwave Backscattering

Khenouchi, Horiya und Buono, Andrea und Nunziata, Ferdinando und Velotto, Domenico und Migliaccio, Maurizio und Smara, Youcef (2018) Analysis of the Oil Seep-affected Sea Surface Microwave Backscattering. SeaSAR 2018, 2018-05-07 - 2018-05-10, Frascati (Rome), Italy.

[img] PDF
30kB

Kurzfassung

In this study, the sensitivity of environmental and sensor parameters that rule microwave backscattering of sea oil seeps is investigated by contrasting analytical models with actual satellite synthetic aperture radar (SAR) measurements. The topic that will be addressed is of paramount importance in many marine and maritime applications as remotely sensed oil seep observation, that is very interesting not only from a scientific point of view, but also from an economical and environmental perspectives being related to oil and gas exploration and extraction activities. Moreover, the problem of sea oil seep backscattering, i. e., the backscattering from reserves of hydrocarbons naturally coming up from the bottom of the ocean to sea surface, is rather challenging and needs further investigation since the processes that lie at the basis of the escape, the development and the lifespan of oil seeps are extremely variable and irregular. The latter result in a quite different backscattering modeling approach if compared to conventional scattering models that deal with sea surface backscattering with and without oil slicks. Hence, in this study, the two scale Boundary Perturbation Method (BPM) is adopted as a reference scattering model to predict sea surface backscattering and, then, the effects of the presence of the oil seep, that include damping properties, reduction of friction velocity and changes in the dielectric permittivity are taken into account. The firsts are considered including the rheological parameters of different kinds of surfactants, i. e., weak-damping biogenic films and strong-damping crude oil; the second is included by applying a penalty factor to slick-free sea surface friction velocity and the third is accounted for by modeling the heterogeneous oil seep according to the effective medium approximation theory, i. e., different kinds of mixture of seawater and oil droplets are considered. Then, the influence of all of those parameters to sea oil seep backscattering is evaluated for different SAR acquisition parameters, i. e., incident wavelength and angle of incidence, sea state conditions, i. e., wind speed, and surfactants’ properties, i. e., damping and concentration. Preliminary results, obtained by contrasting model’s predictions and actual backscattering SAR measurements collected at L-, C- and X-band over well-known sea oil seeps, demonstrated that wind speed, damping properties and incidence angles most affected the backscattering from sea oil seeps, while incident wavelength and the adopted oil/water mixture have a negligible impact on their backscattering.

elib-URL des Eintrags:https://elib.dlr.de/119582/
Dokumentart:Konferenzbeitrag (Poster)
Zusätzliche Informationen:Conference: http://seasar2018.esa.int/
Titel:Analysis of the Oil Seep-affected Sea Surface Microwave Backscattering
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Khenouchi, HoriyaUniversity of Sciences and Technology Houari Boumediene, Algiers, AlgeriaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Buono, AndreaUniversità di Napoli Parthenope, Dipartimento di Ingegneria, 80143 Napoli, ItalyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Nunziata, FerdinandoUniversità di Napoli Parthenope, Dipartimento di Ingegneria, 80143 Napoli, ItalyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Velotto, DomenicoDomenico.Velotto (at) dlr.dehttps://orcid.org/0000-0002-8592-0652NICHT SPEZIFIZIERT
Migliaccio, MaurizioUniversità di Napoli Parthenope, Dipartimento di Ingegneria, 80143 Napoli, ItalyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Smara, YoucefUniversity of Sciences and Technology Houari Boumediene, Algiers, AlgeriaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:8 Mai 2018
Referierte Publikation:Nein
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:surface films, polarimetry, multi-frequency, ocean backscattering
Veranstaltungstitel:SeaSAR 2018
Veranstaltungsort:Frascati (Rome), Italy
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:7 Mai 2018
Veranstaltungsende:10 Mai 2018
Veranstalter :ESA
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - SAR-Methoden
Standort: Bremen , Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung > SAR-Signalverarbeitung
Hinterlegt von: Kaps, Ruth
Hinterlegt am:20 Apr 2018 13:47
Letzte Änderung:24 Apr 2024 20:23

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.