Storegga Slide - NGI
Storegga Slide - NGI
Storegga Slide - NGI
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HAZID: Present Situation with Ormen LangeTrigger mechanismspotential new slidesNatural triggersOrmen LangetriggersEarthquakesGravity(alwayspresent)GashydratemeltingReservoirgasleakageFluid redistributionBlowoutTemperature(wells)ReservoirsubsidenceAnchoringrock fillstrenchingGasGashydratesIncreasedslopeSeismicityMay a combination ofnatural triggers and OrmenLange activities generate aslide with 1st or 3rd partyconsequences?Increased porepressure?Reduced shearstrength?Increasedshear stress?Reduced shearstrength?NoYesDocumentationof consensusQuantitative riskanalyses required