Mud Volcanoes, Geodynamics and Seismicity

Martinelli, Giovanni; Panahi, Behrouz

doi:10.1007/1-4020-3204-8

Cited by 31 publications

(1 citation statement)

References 33 publications

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“…Furthermore, the marine CSEM resistivity profiles can be used to indicate the fluid composition and migration pathways beneath the pockmarks [49]. Below the base of gas hydrate stability zone, sediments contain only free gas or water dissolved gas, such as gas seeps, vents or mud volcanoes [50][51][52][53][54][55]. As mentioned above, the free gas could be distinguished from the sediments while not for the water dissolved gas.…”

Section: Introductionmentioning

confidence: 99%

Improved Detectivity for Detecting Gas Hydrates Using the Weighted Differential Fields of the Marine Controlled-Source Electromagnetic Data

Tang

et al. 2022

JMSE

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Gas hydrate is seen as a kind of new energy resources, yet it may also be one of the main greenhouse gases as its dissociation may release methane into the atmosphere. Furthermore, a severe hazard to offshore infrastructures may also be introduced by extensive gas hydrate dissociation associated with the stability of the geological structures after gas production. Therefore, it is essential to investigate the gas hydrate as well as its environmental impacts before drilling and extracting it. The geophysical seismic reflection data is usually used for exploring the gas hydrate. The gas hydrate can be effectively identified by the bottom simulating reflectors (BSRs) on seismic reflection data. However, the BSR is only for identifying the bottom boundary and it is difficult to estimate its space distribution and saturation within the hydrate stability zone. The marine controlled-source electromagnetic (CSEM) data is suitable for detecting the gas hydrate as the resistivity of the seafloor increases significantly in the presence of gas hydrate or free gas. In this study, a weighted differential-field method is applied to improve the detectivity for identifying the gas hydrate. Numerical tests show that the difference of the EM fields can effectively suppress the airwaves in shallow waters. Therefore, the detectivity given by the field ratio between the models with and without the gas hydrate target is enhanced.

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Section: Introductionmentioning

confidence: 99%

Improved Detectivity for Detecting Gas Hydrates Using the Weighted Differential Fields of the Marine Controlled-Source Electromagnetic Data

Tang

et al. 2022

JMSE

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Assessment of Seismic Hazard in Areas of Mud Volcano Location on the Basis of Geophysical Data

Ismailzadeh

Isayeva

NATO Science Series

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Mud Volcanoes in the Emilia-Romagna Apennines: Small Landforms of Outstanding Scenic and Scientific Value

Castaldini

Coratza

2017

World Geomorphological Landscapes

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Mud volcanoes are emissions of cold mud due to the ascent to the surface of salty and muddy waters mixed with gaseous (methane) and, in minor part, fluid hydrocarbons (petroleum veils) along faults and fractures. In the Emilia-Romagna Apennines (Northern Italy) mud volcanoes are closely linked to the active tectonic compression associated with a thrust of regional importance. They are mostly cone-shaped and show variable geometry and size, ranging from one to few metres, and are located in 19 sites in the northwestern part of the Apennines. The mud volcanoes of the region have been known since a long time and have always aroused great interest due to their outstanding scenic value. In the past the mud volcano emissions have been used in many ways: the mud was applied for cosmetic use and the natural oil was much appreciated for its balsamic and purgative properties. In the last decades the mud volcanoes have represented a relevant tourist attractiveness

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Mud Volcanoes, Geodynamics and Seismicity

Cited by 31 publications

References 33 publications

Improved Detectivity for Detecting Gas Hydrates Using the Weighted Differential Fields of the Marine Controlled-Source Electromagnetic Data

Improved Detectivity for Detecting Gas Hydrates Using the Weighted Differential Fields of the Marine Controlled-Source Electromagnetic Data

Assessment of Seismic Hazard in Areas of Mud Volcano Location on the Basis of Geophysical Data

Mud Volcanoes in the Emilia-Romagna Apennines: Small Landforms of Outstanding Scenic and Scientific Value

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