Magnitude 4.4 CENTRAL MID-ATLANTIC RIDGE
Friday, July 06, 2007 at 19:10:19 UTC
Preliminary Earthquake Report
| Magnitude | 4.4 |
|---|---|
| Date-Time |
Time of Earthquake in other Time Zones |
| Location | 8.64N 40.10W |
| Depth | 10 kilometers |
| Region | CENTRAL MID-ATLANTIC RIDGE |
| Distances |
1290 km (800 miles) N of Parnaiba, Piaui, Brazil 1320 km (820 miles) NNE of Sao Luis, Maranhao, Brazil 1455 km (900 miles) NE of Belem, Para, Brazil 2835 km (1760 miles) NNE of BRASILIA, Distrito Federal, Brazil |
| Location Uncertainty | Error estimate: horizontal +/- 18.2 km; depth fixed by location program |
| Parameters | Nst=15, Nph=15, Dmin=3888.1 km, Rmss=1.12 sec, Erho=18.2 km, Erzz=0 km, Gp=105.2 degrees |
| Source | USGS NEIC (WDCS-D) |
| Event ID | uselby |
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Earthquakes: Frequently Asked Questions
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NB:
The official magnitude for this earthquake is indicated at the top of this page.
This was the best available estimate of the earthquake's size,
at the time that this page was created. Other magnitudes associated
with web pages linked from here are those determined at various times
following the earthquake with different types of seismic data.
Although, given the data used, they are legitimate estimates of magnitude
they are not considered the official magnitude.
The region name is an automatically generated name
from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme.
The boundaries of
these regions are defined at one-degree intervals and therefore differ from
irregular political boundaries.
More->
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
