SAN FRANCISCO – Three fault segments running beneath Northern California and its roughly 15 million people are overdue for a major earthquake, including one section that lies near the dams and cana

The Hawaiian Islands' location in the middle of the Pacific Ocean is threatened by tsunamis from great earthquakes in nearly all directions. Historical great earthquakes Mw > 8.5 in the last 100 years have produced large inundations and loss of life in the islands but cannot account for a substantial (≤ 600 m3) paleotsunami deposit in the Makauwahi sinkhole on the Island of Kaua‘i. Using high-resolution bathymetry and topography we model tsunami inundation of the sinkhole caused by an earthquake with a moment magnitude of Mw ~9.25 located in the eastern Aleutians.

The occurrences of moderate to large magnitude earthquakes and associated subsurface geological processes were critically examined in the backdrop of Indian plate obliquity, stress obliquity, topography, and the late Tertiary regional tectonics for understanding the evolving dynamics and kinematics in the central part of the Himalayas. The higher topographic areas are likely associated with the zones of depressions, and the lower topographic areas are found around the ridges located in the frontal part of the orogen.

Earth’s core is less dense than iron, and therefore it must contain “light elements,” such as S, Si, O, or C. We use ab initio molecular dynamics to calculate the density and bulk sound velocity in liquid metal alloys at the pressure and temperature conditions of Earth’s outer core. We compare the velocity and density for any composition in the (Fe–Ni, C, O, Si, S) system to radial seismological models and find a range of compositional models that fit the seismological data.

In a significant development on role of hydropower projects in Uttarakhand flood disaster of June 2013, the Expert Body (EB) headed by Dr Ravi Chopra has recommended that at least 23 hydropower projects should be dropped, that hydropower projects played significant role in the Uttarakhand disaster and that there is urgent need to improve the env

On 8 August 2010 in the northwestern Chinese province of Gansu, a rainstorm-triggered debris flow devastated the small county of Zhouqu. A modeling study, using a new multiple-phase scalable and extensible geofluid model, suggests that the cause is an intersection of several events.

There is a need to develop short term, medium term and long term strategy for reconstruction, rehabilitation and developmental activities of Uttarakhand.

This report was prepared for grant of Environmental Clearance to ONGC's project titled 'Development Drilling of 40 wells in KG Basin in East Godavari, West Godavari and Krishna Districts of Andhra Pradesh' in Godavari Onland and West Godavari PML Onland blocks.

The end of the world is coming – but not for a while yet. That’s according to a new study indicating that we have 1.75 billion years left until Mother Earth gives up the ghost.

Dams are being built in different sizes depending on the requirements and the height permissible at the particular site. The higher a dam, the larger the concerns for undesirable impacts that have to be mitigated and the assurance that has to be given to everyone that the dam is not a time bomb, the unfortunate sentiment that many tend to possess. Dams have multi-directional benefits that are much larger than the visible damage that it creates.

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