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X-WR-CALNAME:Geolunch seminar @ UiB
X-ORIGINAL-URL:https://geolunch.w.uib.no
X-WR-CALDESC:Events for Geolunch seminar @ UiB
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DTSTART;TZID=Europe/Oslo:20240306T121500
DTEND;TZID=Europe/Oslo:20240306T130000
DTSTAMP:20260429T020500
CREATED:20231119T201510Z
LAST-MODIFIED:20240304T091559Z
UID:827-1709727300-1709730000@geolunch.w.uib.no
SUMMARY:Harya Nugraha
DESCRIPTION:Taking a Closer Look at Mass-transport complexes (MTCs): Their Dynamics and Architecture \nHarya Nugraha \nMass-transport complexes (MTCs) are common features in deep-marine environments. Their emplacement can catastrophically displace sediment to continental slope and basin floor\, and have a direct impact on society by generating tsunamis and destroying offshore infrastructure. The proliferation of high-resolution multibeam bathymetry and three-dimensional seismic reflection data have improved our understanding of their internal form and emplacement processes. However\, uncertainties remain in terms of: (i) how the volume and flow behaviour of MTCs evolve during their translation\, and what controls these changes; (ii) how strain is distributed within MTCs\, and its relationship to their internal architecture and geometry; and (iii) what are the implications of MTC emplacement processes for geohazard risk and petroleum system assessments in sedimentary basins. To address these problems\,three-dimensional seismic reflection\, well\, and bathymetry data from the Exmouth Plateau (offshore NW Australia) and the Makassar Strait (offshore Indonesia) are used. This study demonstrates that: (i) dynamic interaction between mass flows and substrate lead to the final volume is three times the initially evacuated volume on average\, and the formation of intra-MTC flow cells that can translate with a different speed and runout distance; (ii) strain distribution of an MTC is variable along strike\, resulting in the variations of internal architecture and frontal geometry\, partly controlled by the basal shear surface depth and morphology; and (iii) changes in MTCs volume and flow behaviour should be considered for tsunami and impact modelling\, and heterogeneity of MTCs should be characterised when evaluating their reservoir and seal potential for hydrocarbon systems.
URL:https://geolunch.w.uib.no/event/harya-nugraha/
LOCATION:Kontinentalsokkelen (2G16e)\, Realfagbygget\, Allégaten 41\, Bergen\, 5007\, Norway
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DTSTART;TZID=Europe/Oslo:20240314T120000
DTEND;TZID=Europe/Oslo:20240314T131000
DTSTAMP:20260429T020500
CREATED:20231119T201611Z
LAST-MODIFIED:20240311T141658Z
UID:829-1710417600-1710421800@geolunch.w.uib.no
SUMMARY:Eric Deal & Jean Braun
DESCRIPTION:Eric Deal (ETH Zürich\, Simon Fraser University): \n“Similarities in channel form and function between rivers\, glaciers\, debris flows and other channelized flows” \nJean Braun (GFZ Potsdam\, University of Potsdam): \n“What Controls Alluvial Fan Size and Shape?”
URL:https://geolunch.w.uib.no/event/deal-braun/
LOCATION:Kontinentalsokkelen (2G16e)\, Realfagbygget\, Allégaten 41\, Bergen\, 5007\, Norway
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DTSTART;TZID=Europe/Oslo:20240320T121500
DTEND;TZID=Europe/Oslo:20240320T130000
DTSTAMP:20260429T020500
CREATED:20231119T201744Z
LAST-MODIFIED:20240318T152533Z
UID:831-1710936900-1710939600@geolunch.w.uib.no
SUMMARY:Durra Handri Saputera
DESCRIPTION:Modelling and inversion of electromagnetic induction log using the Integral Equation method \nDurra Handri Saputera \nElectromagnetic (EM) induction logging tools are commonly used to assist the optimal trajectory decision process while drilling. The tool typically has multiple axial components with different sensitivities to the subsurface structure and anisotropy. Three-dimensional (3D) inversion of induction logs enables imaging of complex geological formations. However\, it is still very challenging because of the significant computational cost of the 3D forward modelling. This motivates the study of inexpensive approaches to the forward and inverse problems. In this talk\, I will give an overview of the things we have developed based on the implementation of the Integral Equation method on the forward and inverse problems.”
URL:https://geolunch.w.uib.no/event/durra-handri-saputera/
LOCATION:Kontinentalsokkelen (2G16e)\, Realfagbygget\, Allégaten 41\, Bergen\, 5007\, Norway
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