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Earthquake Risk: Spotlight on the Pacific Northwest

The Triple Threat of the Cascadia Subduction Zone

Maiclaire Bolton    |    Natural Hazard Risk

3 types of earthquakes associated

It was a cold, dark, wintery night in 1700 when the ground shook violently for several minutes during one of the largest earthquakes the world has ever experienced. This massive magnitude 9.0 earthquake ruptured the full length of the Cascadia subduction zone – a 1,000-kilometer (600-mile) long off-shore fault paralleling the west coast of North America, extending from mid-Vancouver...

Earthquake Risk: Spotlight on New Zealand

The Shaky Isles

Maiclaire Bolton    |    Natural Hazard Risk

Tectonic Setting of NZ

Over the past five years, one of the countries to lead headline news with earthquake events has been New Zealand. Most recently, on November 14, 2016 (local time in New Zealand, November 13, GMT) a large megathrust earthquake struck off the east coast of the South Island along the southern end of the Hikurangi subduction zone, just north of the city of Christchurch. According to New...

In Flood Risk Modeling, Resolution Matters

Even When You Think It Shouldn’t

Laurel DiSilvestro    |    Natural Hazard Risk

We have all seen the dramatic pictures of destruction and loss after a devastating flood event. Usually, the scene is depicted as a sea of water inundating broad areas of a geographic region, impacting communities and homes. However, what we usually don’t understand from these images is the significant regional variations of water depth. This is one of the key indicators of contents...

2016 Wildfire Season Not Likely to Top Record-Setting 2015 Season

Trajectory Shows Fewer Fires and Fewer Total Acres Burned in 2016

Tom Jeffery    |    Natural Hazard Risk

In 2015, the amount of area consumed by wildfires in the U.S. topped 10 million acres for the first time, recording an annual total of 10,125,149 acres burned according to the National Interagency Fire Center.1 By comparison, the average burned acreage per year over the previous 20 years (1995-2014) was 5,820,402 acres.1 As of October 21, 2016, there were 4,989,330...

Earthquake Risk: Spotlight on Oklahoma

Induced Seismicity: Emerging Risk?

Maiclaire Bolton    |    Natural Hazard Risk

Number of Earthquakes M3.0 or Higher in 2016

California is typically the first place that comes to mind when one thinks of earthquake activity in the U.S. In recent years, however, the central U.S. – especially Oklahoma, northern Texas and southern Kansas – has been getting more and more attention because of the rapid increase in earthquake activity. In fact, Oklahoma went from being a region of relatively low seismic...

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