Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1126/science.1101152 | DOI Listing |
Sci Rep
August 2024
University of Chieti-Pescara, via dei Vestini 31, 66100, Chieti, Italy.
High-hazard seismic zones can remain silent over centuries with meager seismicity rates challenging our understanding of seismic processes. We focus on the comprehensive analysis of cascading episodes of swarms and seismic sequences following the 2009 L'Aquila mainshock (M 6.3) in the southern-central Apennine that previously experienced ~ M7 earthquakes.
View Article and Find Full Text PDFPLoS One
March 2024
CSA Ocean Sciences Inc., Okeechobee, FL, United States of America.
Visual observation data collected by protected species observers (PSOs) is required per regulations stipulated in Notices to Lessees (NTLs) and geophysical survey Permits (Form BOEM-0328) issued to seismic operators in the Gulf of Mexico (GOM). Here, data collected by certified and trained PSOs during seismic surveys conducted between 2002-2015 were compiled and analyzed to assess utility in assessing marine mammal responses to seismic noise and effectiveness of required mitigation measures. A total of 3,886 agency-required bi-weekly PSO Effort and Sightings reports were analyzed comprising 598,319 hours of PSO visual effort and 15,117 visual sighting records of marine mammals.
View Article and Find Full Text PDFJ Contam Hydrol
March 2020
São Carlos School of Engineering (EESC), University of São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP 13566-590, Brazil. Electronic address:
Even though attenuation processes in the subsurface are known to reduce the impacts of contaminant plumes, their importance is significantly dependent on geological and climatic characteristics, as well as on the leachate quality. The knowledge of attenuation processes linked to different geological formations is therefore fundamental in predicting the impacts of waste disposal areas. Geophysical methods are useful tools for assessing and delineating contaminant plumes, as well as their changes with time, which enables their lower-cost monitoring and association with geological and environmental properties.
View Article and Find Full Text PDFRisk Anal
January 2020
Department of Geosciences, The Pennsylvania State University, University Park, PA, USA.
Sea levels are rising in many areas around the world, posing risks to coastal communities and infrastructures. Strategies for managing these flood risks present decision challenges that require a combination of geophysical, economic, and infrastructure models. Previous studies have broken important new ground on the considerable tensions between the costs of upgrading infrastructure and the damages that could result from extreme flood events.
View Article and Find Full Text PDFNature
July 2006
Geophysics Department, Stanford University, Stanford, California 94305, USA.
Slow-slip events, or 'silent earthquakes', have recently been discovered in a number of subduction zones including the Nankai trough in Japan, Cascadia, and Guerrero in Mexico, but the depths of these events have been difficult to determine from surface deformation measurements. Although it is assumed that these silent earthquakes are located along the plate megathrust, this has not been proved. Slow slip in some subduction zones is associated with non-volcanic tremor, but tremor is difficult to locate and may be distributed over a broad depth range.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!