|Region: Fort Payne, Alabama|
|Time (gmt): 08:59:37.2|
|Magnitude: mb(Lg) 4.9 (NEIC), Mw=4.8 (LDEO)|
|Depth: 13 km|
Seismograms recorded by LCSN Station PAL (Palisades, NY)
Broadband, Vertical-component seismic record at PAL (distance=1,236 km)
in Rockland County, NY (about 15 miles North of Manhattan).
Pn wave from the quake should arrives at around 09:10:10, but it is very
Source Mechanism and Focal Deth
Source mechanism of the 29 April 2003 Fort Payne, Alabama earthquake determined by
using seismic signals recorded at regional distances (from 208 km to 1,236 km) suggests
that the event was a predominantly strike-slip faulting.
Source depth of 13 km fits the observed records best.
Data source: broadband stations of the regional seismographic networks
in the Central United States.
Cooperative New Madrid (UTMT, PVMO, SIUC, MPH, SLM, UALR)
BILLIKEN/USNSN/GSN (WVT, CCM, WCI),
USNSN (MIAR, LRAL).
Recent Earthquakes in the Central U.S.
Recent Earthquakes in the Central U.S. with known source mechanism.
Notice that 29 April 2003 earthquake is at the southwestern end
of the Eastern Tennesse seismic zone. Beach-ball representing the April 29, 2003