Issues

SSA NEWS AND NOTES
FOCUS SECTION
The Forecasting Skill of Physics‐Based Seismicity Models during the 2010–2012 Canterbury, New Zealand, Earthquake Sequence
The Collaboratory for the Study of Earthquake Predictability: Achievements and Priorities
ARTICLES
The 21 August 2017 4.0 Casamicciola Earthquake: First Evidence of Coseismic Normal Surface Faulting at the Ischia Volcanic Island
A Seismogeodetic Amphibious Network in the Guerrero Seismic Gap, Mexico
ELECTRONIC SEISMOLOGIST
HISTORICAL SEISMOLOGIST
COMMUNICATING SCIENCE
EDUQUAKES
DATA MINE
Development of a Slow Earthquake Database
EASTERN SECTION
MEETING CALENDAR
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Cover Image
Cover Image
Front: Since 1 October 2015, the global earthquake activity rate (GEAR1) seismicity model has undergone prospective evaluation within the Collaboratory for the Study of Earthquake Predictability (CSEP) testing center, forecasting Mw ≥ 5.95 seismicity. As part of this issue’s Focus Section on the Collaboratory for the Study of Earthquake Predictability (CSEP): New Results and Future Directions, Strader et al. present initial prospective forecast test results for the GEAR1 model, its tectonic and seismicity components, and the first iteration of the strain-rate-based model, during the 1 October 2015–7 September 2017 period. Forecast maps showing Mw ≥ 5.95 earthquake epicentroid rates for GEAR1 and other models are illustrated here.
Back: Linville et al. (Electronic Seismologist, this issue) present a frequency domain array-based detection algorithm that exploits the gridded station configuration of the EarthScope Transportable Array to detect and locate small magnitude (M < 2.5) earthquakes. The authors apply the method to three sedimentary basins in the central United States as well as a dataset from Yellowstone National Park. Results from the Yellowstone data demonstrate that when array station spacing remains regular, events from nonearthquake sources such as hydrothermal features can be successfully detected and located without the necessity to tune parameters for specific sources. Daytime (red, assumed anthropogenic) and nighttime (yellow) detections from one day of data from the Doublet Pool and Old Faithful are shown.
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