Coast of British Columbia and south eastern Alaska are frequently hit by strong earthquakes originating from a complex system of faults that give high magnitude shakes. The close examination of the two most recent major events - the Mw 7.8 Haida Gwaii and Mw 7.5 Craig events - revealed valuable information with regards to the interaction between the Pacific and North America plates and the fault complexity of the region. All research findings are included in 19 technical articles of a special issue published by the Seismological Society of America.
Although earthquakes along the North Anatolian Fault (NAF) have been very frequent and devastating to the city of Istanbul, recurrence rate has been difficult to evaluate as faults are located offshore. A new study published in the Bulletin of the Seismological Society of America (BSSA) brings new evidence on the earthquake history of NAF's main segment based on seabed soil samples.
Heavy rains in 2013 lead to devastating floods of rock, soil, and water through many cities and towns that line the Colorado Rockies. Scientists are now considering the importance of large, rare, independent storm events in determining an area’s landscape. Scott Anderson, a geomorphologist with the U.S. Geological Survey in Tacoma, Washington and lead author of a new study stated that "while it strikes us as very random, our research suggests this is one of the formative processes in this landscape."
In a new study, scientists at Rice University have found that high value strains of oil-rich algae, which can be used as a feedstock for algae-based biofuels, can remove more than 50% of phosphorus and 90% of nitrates from wastewater. Working in collaboration with the Houston Department of Public Works and Engineering, the scientists operated a pilot-scale treatment system at a Houston’s wastewater treatment plant.
Scientists from the University of Wisconsin - Milwaukee are using raw sewage samples to learn a great deal of information about a city’s population. UWM researchers, in conjunction with colleagues at the Marine Biological Laboratory in Woods Hole, MA, determined that the bacteria found in raw sewage is similar to those found in the gastro-intestinal tracks of people from the community - that the sewage provides an accurate picture of community health. Sampling the guts of thousands of individuals is prohibitively expensive, but this new approach of monitoring sewage would allow public health officials and other interested parties to look at an entire city at once.
According to a new study, published in Geophysical Research Letters, thousands of tons of global-warming and ozone-depleting chemicals were released into the atmosphere, following the Tohoku 2011 earthquake. The new study is the first to show the importance of including the release of gases from natural disasters in emissions estimates.