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New remote sensing techniques for the detection and quantification of Earth surface CO2 degassing

Tank, Volker und Kick, Hermann und Pfanz, Hardy (2008) New remote sensing techniques for the detection and quantification of Earth surface CO2 degassing. Journal of Volcanology and Geothermal Research, Seiten 515-524. Elsevier B. V.. DOI: 10.1016/j.jvolgeores.2008.06.034.

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Offizielle URL: http://dx.doi.org/10.1016/j.jvolgeores.2008.06.034

Kurzfassung

Earth degassing specifically of carbon dioxide CO2 is of increasing interest with respect to the global carbon budget, related climate effects, earth quake and volcano eruption mechanisms, as well as plant physiological reactions in gas-rich environments. Investigations in all of these disciplines require the detection of surface CO2 degassing structures and quantification of their emissions. We introduce minimal thermal change detection based on infrared imaging as a new remote sensing tool for the detection of earth surface thermal anomalies suiting among others to discover Earth degassing locations of any origin. The method allows for seamless areal search and monitoring of degassing structures in any terrain. As proof of concept infrared imaging measurements were performed at the Bossoleto vent on the eastern master fault of the Siena Graben (Tuskany, Italy). It is known for the migration of a large amount of CO2-rich gas from deep geothermal reservoirs. Field data acquired confirmed the qualification of the method. Detection of CO2 degassing locations from infrared image time series worked reliably and optimal detection conditions were identified (dry, calm, cloudless weather between dusk and dawn). A simple model of heat exchange processes involved and observed was developed. In a first attempt this model was applied to determine the gas exit temperature, the area of gas thermal reach and the gas flux from recorded image series. It is the first method that allows remote areal survey of mofette fields and the associated CO2 flux quantification sole from infrared image time series.

Dokumentart:Zeitschriftenbeitrag
Titel:New remote sensing techniques for the detection and quantification of Earth surface CO2 degassing
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Tank, VolkerNICHT SPEZIFIZIERT
Kick, HermannNICHT SPEZIFIZIERT
Pfanz, HardyUniversität Duisburg Essen
Datum:17 August 2008
Erschienen in:Journal of Volcanology and Geothermal Research
Referierte Publikation:Ja
In Open Access:Ja
In ISI Web of Science:Ja
DOI :10.1016/j.jvolgeores.2008.06.034
Seitenbereich:Seiten 515-524
Verlag:Elsevier B. V.
Status:veröffentlicht
Stichwörter:soil CO2 efflux, lithospheric degassing, minimal thermal change detection, infrared image, degassing structure detection, mofette
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Spektrometrische Verfahren und Konzepte der Fernerkundung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung > Experimentelle Verfahren
Hinterlegt von: Dr.-Ing. Volker Tank
Hinterlegt am:24 Sep 2008
Letzte Änderung:04 Feb 2013 09:32

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