Gas Hydrates

Congo / Angola

Black Sea

Cascadia Margin

Makran

Gulf of Mexico

Costa Rica

Xing, Junhui, Spiess V. (2022) Late Miocene-Quaternary Sedimentary Environment Evolution of the Kerch Seep area, Black Sea. Marine Geology

Wenau, Stefan, Spiess V., Keil H., Fei T. (2018) Localization and characterization of a gas bubble stream at a Congo deep water seep site using a 3D gridding approach on single-beam echosounder data. Marine and Petroleum Geology 97, 612-623, https://doi.org/10.1016/j.marpetgeo.2018.07.016. (PDF)

Wenau, Stefan, Spiess V. (2018) Active Seafloor Seepage Along Hydraulic Fractures Connected to Lateral Stress From Salt-Related Rafting: Regab Pockmark, Congo Fan. Journal of Geophysical Research: Solid Earth 123 (5), 3301-3319, https://doi.org/10.1002/2017JB015006.

Wenau, Stefan, Spiess V., Pape T., Fekete N. (2017) Controlling mechanisms of giant deep water pockmarks in the Lower Congo Basin. Marine and Petroleum Geology 83, 140-157, https://doi.org/10.1016/j.marpetgeo.2017.02.030.

Wenau Stefan, Spiess V., Pape T., Fekete N. (2015) Cold seeps at the salt front in the Lower Congo Basin I: Current methane accumulation and active seepage. Marine and Petroleum Geology. 67, 894-908, https://doi.org/10.1016/j.marpetgeo.2014.07.032.

Wenau Stefan, Spiess V., Pape T., Fekete N. (2015) Cold seeps at the salt front in the Lower Congo Basin II: The impact of spatial and temporal evolution of salt-tectonics on hydrocarbon seepage. Marine and Petroleum Geology. 67, 880-893, https://doi.org/10.1016/j.marpetgeo.2014.09.021.

Xing Junhui, Spiess V. (2015) Shallow gas transport and reservoirs in the vicinity of deeply rooted mud volcanoes in the central Black Sea. Marine Geology. 369, 67-78, https://doi.org/10.1016/j.margeo.2015.08.005.

Smith Gemma L., McNeill LC., Henstock TJ., Arraiz D., Spiess V. (2014) Fluid generation and distribution in the highest sediment input accretionary margin, the Makran. Earth and Planetary Science Letters. 403, 131-143, https://doi.org/10.1016/j.epsl.2014.06.030.

Fischer, David, Mogollon JM., Strasser M., Pape T., Bohrmann G., Fekete N., Spiess V., Kasten S. (2013) Subduction zone earthquake as potential trigger of submarine hydrocarbon seepage. Nature Geoscience; 6, 647–651, https://doi.org/10.1038/ngeo1886.

Wenau, Stefan (2013) Seismic and acoustic imaging of fluid seepage structures in different sedimentological and tectonic settings in the Lower Congo Basin. Dissertation, xx. pp.. https://media.suub.uni-bremen.de/bitstream/elib/550/1/00103442-1.pdf.

Xing, Junhui (2013) Seismoacoustic study of the shallow gas transport and reservoirs in the vicinity of seabed fluid seepage of the Black Sea. Dissertation xx. pp.. https://media.suub.uni-bremen.de/bitstream/elib/550/1/00103442-1.pdf.

Römer, Miriam, Sahling H., Pape T., Bohrmann G., Spiess V. (2012) Quantification of gas bubble emissions from submarine hydrocarbon seeps at the Makran continental margin (offshore Pakistan). Journal of Geophysical Research: Oceans, 117, 1-19, https://doi.org/10.1029/2011JC007424.

Kasten, Sabine, Nöthen K., Hensen C., Spiess V., Blumenberg M., Schneider RR. (2012) Gas hydrate decomposition recorded by authigenic barite at pockmark sites of the northern Congo Fan. Geo-Marine Letters 32 (5-6), 515-524, https://doi.org/10.1007/s00367-012-0288-9.

Pierre, Catherine, Blanc-Valleron MM., Demange J., Boudouma O., Foucher JP., Pape T., Himmler T., Fekete N., Spiess V. (2012) Authigenic carbonates from active methane seeps offshore southwest Africa. Geo-Marine Letters 32 (5-6), 501-513, https://doi.org/10.1007/s00367-012-0295-x.

Ding, Feng, Spiess V., MacDonald IR., Brüning M., Fekete N., Bohrmann G. (2010) Shallow Sediment Deformation Styles in North-Western Campeche Knolls, Gulf of Mexico, and their Controls on the Occurrence of Hydrocarbon Seepage. Marine and Petroleum Geology, 27, 959-972, https://doi.org/10.1016/j.marpetgeo.2010.01.014.

Ding, Feng, Spiess V., Fekete N., Murton B., Brüning M., Bohrmann G. (2010) Interaction between Accretionary Thrust Faulting and Slope Sedimentation at the Frontal Makran Accretionary Prism, their Resultant Shallow Sediment Structures and Some Implications for Hydrocarbon Fluid Seepage. Journal of Geophysical Research, 115, B08106, https://doi.org/10.1029/2008JB00624.

Ding, Feng (2009) Near-surface Sediment Structures at Cold Seeps and their Physical Control on Seepage: A Geophysical and Geological Study in the Southern Gulf of Mexico and at the frontal Makran Accretionary Prism/Pakistan. Dissertation,  xx pp.. https://media.suub.uni-bremen.de/bitstream/elib/2620/1/00011331.pdf.

Ding, Feng, Spiess V., Brüning M. , Fekete N., Keil H., Bohrmann G. (2008) A conceptual model for hydrocarbon accumulation and seepage processes around Chapopote asphalt site, southern Gulf of Mexico: From high resolution seismic point of view, J. Geophys. Res., 113, B08404, https://doi.org/10.1029/2007JB005484.

Wagner-Friedrichs, Michelle, Krastel S., Spiess V., Ivanov M., Bohrmann G., Meisner L. (2008) Threedimensional seismic investigations of the Sevastopol mud volcano in correlation to gas/fluid migration pathways and gas hydrate occurrences in the Sorokin Trough (Black Sea). Geochemistry, Geophysics, Geosystems, 9, Q05012, https://doi.org/10.1029/2007GC001685 .

Sahling, Heiko, Bohrmann G., Spiess V., Bialas J., Breitzke M., Ivanov M., Kasten S., Krastel S.,  Schneider RR. (2008) Pockmarks in the Northern Congo Fan area, SW Africa: Complex seafloor features shaped by fluid flow. Marine Geology, 249, 206-225, https://doi.org/10.1016/j.margeo.2007.11.010.

Wagner-Friedrichs, Michelle (2007) Seafloor seepage in the Black Sea: Mud volcanoes, seeps and diapiric structures imaged by acoustic methods. Dissertation, 154 pp..https://media.suub.uni-bremen.de/bitstream/elib/2356/1/00010674.pdf

Fekete, Noemi (2006) Dewatering through mud mounds on the continental fore-arc of Costa Rica. (PhD/Doktorarbeit), Christian-Albrechts-Universität, Kiel, Germany, 171 pp. http://oceanrep.geomar.de/8668/1/fekete.pdf.

Zühlsdorff, Lars, Spiess V. (2005) Three-dimensional seismic and acoustic imaging of gas migration and gas hydrate accumulation beneath pockmarks in hemipelagic sediments off Congo, South-West Africa. In: Proceedings of the fifth international conference on gas hydrates (ICGH 5), Norway, 10 pages. (PDF)

Zühlsdorff Lars, Spiess V. (2004) Three-dimensional seismic characterization of a venting sites reveals compelling indications of natural hydraulic fracturing, Geology, 32: 101-104, https://doi.org/10.1130/G19993.1.

Bohrmann, Gerhard, Ivanov M., Foucher JP., Spiess V., Bialas J., Greinert J., Weinrebe W., Abegg F., Aloisi G., Artemov Y., Blinova V., Brosler A., Drews M., Heidersdorf F., Klaucke I., Krastel S., Leder T., Polikarpov I., Saburova M., Seifert R., Volkonskaja A., Zillmer M. (2003) Mud volcanoes and gas hydrates in the Black Sea – new data from Dvurechenskii and Odessa mud volcanoes. Geo Mar. Lett., 23, 239-249, https://doi.org/10.1007/s00367-003-0157-7.

Krastel, Sebastian, Spiess V., Ivanov M., Weinrebe W., Bohrmann G., Shashkin P., Heidersdorf F. (2003) Acoustic images of mud volcanoes in the Sorokin Trough, Black Sea. Geo Mar. Lett., 23, 230-238, https://doi.org/10.1007/s00367-003-0143-0.

Zühlsdorff, Lars, Spiess V., Hübscher C., Villinger H., Rosenberger A. (2000) Implications for focused fluid transport at the northern Cascadia accretionary prism from a correlation between BSR occurrence and near-sea-floor reflectivity anomalies imaged in a multi-frequency seismic data set, Int. J. Earth Sci., 88, 655-667, https://doi.org/10.1007/s005310050295.