Preliminary observations of the April 5th, 2024, Mw4.8 New Jersey earthquake

Oliver S. Boyd; William D. Barnhart; James Bourke; Martin C. Chapman; Paul S. Earle; Guo-chin Dino Huang; Jessica Ann Thompson Jobe; Won-Young Kim; Frederick Link; Mairi Maclean Litherland; Andrew Lloyd; Maureen Long; Sara McBride; Andrew J. Michael; Walter D. Mooney; Gregory Moutain; Sissy Nikolaou; Alexandros Savvaidas; Felix Waldhauser; Cecily J. Wolfe; Clara Yoon

doi:10.1785/0320240024

Preliminary observations of the April 5th, 2024, Mw4.8 New Jersey earthquake

The Seismic Record

By: Oliver S. Boyd, William D. Barnhart, James Bourke, Martin C. Chapman, Paul S. Earle, Guo-chin Dino Huang, Jessica Ann Thompson Jobe, Won-Young Kim, Frederick Link, Mairi Maclean Litherland, Andrew Lloyd, Maureen Long, Sara McBride, Andrew J. Michael, Walter D. Mooney, Gregory Moutain, Sissy Nikolaou, Alexandros Savvaidas, Felix Waldhauser, Cecily J. Wolfe, and Clara Yoon

https://doi.org/10.1785/0320240024

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Abstract

On 5 April 2024, 10:23 a.m. local time, a moment magnitude 4.8 earthquake struck Tewksbury Township, New Jersey, about 65 km west of New York City. Millions of people from Virginia to Maine and beyond felt the ground shaking, resulting in the largest number (>180,000) of U.S. Geological Survey (USGS) “Did You Feel It?” reports of any earthquake. A team deployed by the Geotechnical Extreme Events Reconnaissance Association and the National Institute of Standards and Technology documented structural and nonstructural damage, including substantial damage to a historic masonry building in Lebanon, New Jersey. The USGS National Earthquake Information Center reported a focal depth of about 5 km, consistent with a lack of signal in Interferometric Synthetic Aperture Radar data. The focal mechanism solution is strike slip with a substantial thrust component. Neither mechanism’s nodal plane is parallel to the primary northeast trend of geologic discontinuities and mapped faults in the region, including the Ramapo fault. However, many of the relocated aftershocks, for which locations were augmented by temporary seismic deployments, form a cluster that parallels the general northeast trend of the faults. The aftershocks lie near the Tewksbury fault, north of the Ramapo fault.

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Additional publication details
Publication type	Article
Publication Subtype	Journal Article
Title	Preliminary observations of the April 5th, 2024, Mw4.8 New Jersey earthquake
Series title	The Seismic Record
DOI	10.1785/0320240024
Volume	4
Issue	4
Year Published	2024
Language	English
Publisher	Seismological Society of America
Contributing office(s)	Geologic Hazards Science Center - Seismology / Geomagnetism
Description	11 p.
First page	240
Last page	250
Country	United States
State	New Jersey
Google Analytic Metrics	Metrics page