Issues

OPINION
The Groningen Gasquakes: Foreseeable Surprises, Complications of Hard Science, and the Search for Effective Risk Communication
IN MEMORIAM
In Memoriam: Jim Agnew (1955–2018)
ARTICLES
Hybrid Event Detection and Phase‐Picking Algorithm Using Convolutional and Recurrent Neural Networks
Characterizing Acoustic Signals and Searching for Precursors during the Laboratory Seismic Cycle Using Unsupervised Machine Learning
The December 2018 5.7 and January 2019 5.3 Earthquakes in South Sichuan Basin Induced by Shale Gas Hydraulic Fracturing
Seismic and Aseismic Fault Slip Associated with the 2017 8.2 Chiapas, Mexico, Earthquake Sequence
3D Model Backprojection of the 2017 8.2 Chiapas Earthquake: A Two‐Stage Rupture with a Barrier‐Induced Velocity Increase
Did the Deadly 1917 Monterchi Earthquake Occur on the Low‐Angle Alto Tiberina (Central Italy) Normal Fault?
Traffic Light Systems: To What Extent Can Induced Seismicity Be Controlled?
Assessments of the Performance of the 2017 One‐Year Seismic‐Hazard Forecast for the Central and Eastern United States via Simulated Earthquake Shaking Data
The Current Unlikely Earthquake Hiatus at California’s Transform Boundary Paleoseismic Sites
Automated Quality Control for Large Seismic Networks: Implementation and Application to the AlpArray Seismic Network
Effects of Failure of the Ocean‐Bottom Seismograph Leveling System on Receiver Function Analysis
Lake‐Bottom Seismograph Observations of Microseisms in Yellowstone Lake
On the Feasibility of Using the Dense MyShake Smartphone Array for Earthquake Location
A Crustal Velocity Model for the Peninsular Ranges of Baja California and Southwestern Laguna Salada, Mexico
Shear‐Wave Velocity in the Seattle Basin to 2 km Depth Characterized with the Microtremor Array Method: Insights for Urban Basin‐Scale Imaging
From Earthquake Source Parameters to Ground‐Motion Warnings near You: The ShakeAlert Earthquake Information to Ground‐Motion (eqInfo2GM) Method
Engineering Seismological Parameters of Two 4.3 Intraplate Earthquakes in the Northern Rhine Area, Germany
Broadband (0–5 Hz) Fully Deterministic 3D Ground‐Motion Simulations of a Magnitude 7.0 Hayward Fault Earthquake: Comparison with Empirical Ground‐Motion Models and 3D Path and Site Effect...
Systematic Determination of Focal Mechanisms over a Wide Magnitude Range: Insights from the Real‐Time FMNEAR Implementation in Chile from 2015 to 2017
The Application of Coda and Energy Methods for Magnitude Estimation of Microseismic Events
A Complete Automatic Procedure to Compile Reliable Seismic Catalogs and Travel‐Time and Strong‐Motion Parameters Datasets
Research on Parameter Calculation for the Ogata–Katsura 1993 Model in Terms of the Frequency–Magnitude Distribution Based on a Data‐Driven Approach
On the Apparently Inappropriate Use of Multiple Hypothesis Testing in Earthquake Prediction Studies
RETRACTION
Notice of Retraction: Preliminary Analysis of Strong Ground Motions in the Heavily Damaged Zone in Mashiki Town, Kumamoto, Japan, during the Mainshock of the 2016 Kumamoto Earthquake (...
ELECTRONIC SEISMOLOGIST
A Reliable Strategy for Improving Automatic First‐Arrival Picking of High‐Noise Three‐Component Microseismic Data
DATA MINE
The 2016 7.8 Pedernales, Ecuador, Earthquake: Rapid Response Deployment
Exotic Seismic Events Catalog (ESEC) Data Product
The Central Mongolia Seismic Experiment: Multiple Applications of Temporary Broadband Seismic Arrays
EASTERN SECTION
Earthquake Early Warning Feasibility Study for the New Madrid Seismic Zone
Evidence for Large New Madrid Earthquakes about A.D. 0 and 1050 B.C., Central United States
Implementation of a Smoothed‐Seismicity Algorithm in Monte Carlo PSHA Software EqHaz and Implications for Localization of Hazard in the Western Canada Sedimentary Basin
Short‐Term Hindcasts of Seismic Hazard in the Western Canada Sedimentary Basin Caused by Induced and Natural Earthquakes
MEETING CALENDAR
Meeting Calendar
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Cover Image
Cover Image
Front: On 16 December 2018, an ML 5.7 earthquake struck Xingwen County, Sichuan Province, China, and on 3 January 2019, an ML 5.3 earthquake occurred 8 km to the west, resulting in extensive damage to nearby structures. Lei et al. (this issue) reports that these earthquakes are the largest and most damaging in the Changning shale gas block, where 11 ML ≥ 4.0 events (including three ML ≥ 5.0) have been observed since hydraulic fracturing (HF) began in 2014. A 3D view (top) shows a simplified geological section overlapping with relocated hypocenters for observed earthquakes. The shaded image shows the landscape and well pads in which hydraulic fracturing was performed or is ongoing. The map view (bottom) shows active HF pads and three days of pre- and aftershocks of the 16 December 2018 ML 5.7 earthquake. The shaded area shows the change of Coulomb failure stress (ΔCFS) from the ML 5.7 earthquake to receiver faults of (strike, dip, rake) = (170, 83, 12) and depth of 2 km. ZJ indicates the location of Zhoujia village, which suffered the most extensive damage.
Back: By coincidence (and scaling) the acceleration response spectrum of the 2011 Goch (Germany) earthquake recorded at the 130 m level of the north tower of Cologne Cathedral follows the shape of this World Heritage Monument. Hinzen (this issue) describes the ground motion parameters of two similarly sized local earthquakes (ML 4.3) measured by a 40-station network with several stations with identical epicentral distances, including the five stations in the cathedral.
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