Squirt flow due to interfacial water films in hydrate bearing sediments
- Publication type:
- Journal article
- Metadata:
-
- Abstract
- <jats:p>Abstract. Sediments containing gas hydrate dispersed in the pore space are known to show a characteristic seismic anomaly which is a high attenuation along with increasing seismic velocities. Currently, this observation cannot be fully explained albeit squirt-flow type mechanisms at the microscale have been speculated to be the cause. Recent major findings from in-situ experiments coupled with high-resolution synchrotron-based X-ray micro-tomography revealed a systematic presence of thin water films between the quartz grains and the encrusting hydrate. In this study, the data was obtained from the experiments and underwent an image processing procedure to quantify the thicknesses and geometries of the aforementioned interfacial water films. Overall, the water films vary from sub-μm to a few μm in thickness where some of them are interconnected by water bridges. This geometrical analysis is then used to propose a new conceptual squirt flow model for hydrate bearing sediments. Subsequently the established model acts as a direct model input to obtain seismic attenuation. Our results support previous speculations that squirt flow can explain high attenuation at seismic frequencies in hydrate bearing sediments, but based on a conceptual squirt flow model which is different than those previously considered. </jats:p>
- Autoren
- Kathleen Sell
- Beatriz Quintal
- Michael Kersten
- Erik H Saenger
- DOI
- 10.5194/se-2017-106
- Datum der Veröffentlichung
- 2017
- Status
- Published
- Herausgeber URL
- http://dx.doi.org/10.5194/se-2017-106
- Datum der Datenerfassung
- 2020
- Titel
- Squirt flow due to interfacial water films in hydrate bearing sediments
Data source: Crossref
- Other metadata sources:
-
- Author's licence
- CC-BY
- Autoren
- Kathleen Sell
- Beatriz Quintal
- Michael Kersten
- Erik H Saenger
- Hosting institution
- Universitätsbibliothek Mainz
- Sammlungen
- JGU-Publikationen
- Resource version
- Published version
- DOI
- 10.5194/se-9-699-2018
- Funding acknowledgements
- DFG, Open Access-Publizieren Universität Mainz / Universitätsmedizin
- File(s) embargoed
- false
- Open access
- true
- ISSN
- 1869-9529
- Zeitschrift
- Solid earth
- Schlüsselwörter
- 550 Geowissenschaften
- 550 Earth sciences
- Sprache
- eng
- Open access status
- Open Access
- Paginierung
- 699 - 711
- Datum der Veröffentlichung
- 2018
- Public URL
- https://openscience.ub.uni-mainz.de/handle/20.500.12030/652
- Herausgeber
- Copernicus Publ.
- Herausgeber URL
- http://dx.doi.org/10.5194/se-9-699-2018
- Datum der Datenerfassung
- 2018
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2018
- Zugang
- Public
- Titel
- Squirt flow due to interfacial water films in hydrate bearing sediments
- Ausgabe der Zeitschrift
- 9
Files
58204.pdf
Data source: OPENSCIENCE.UB
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