Centre Sismologique Euro-Mediterraneen
European-Mediterranean Seismological Centre
Rapid Determination of Source Parameters
operated at LDG (Paris) and IGN (Madrid)
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*********************** ALERT MESSAGE ****************************
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WARNING : These parameters are preliminary and subject to revision.
Location and magnitude estimations may be revised if necessary in
an INFORMATION message.
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EARTHQUAKE on 10/05/2023 at 16:02 (UTC)
TONGA 99 km NW Hihifo
MAGNITUDE: Mw 7.6
Data provided by: AT AUST DJA GFZ GNS GSRC INGV KAN MAD MMD N
EIC PT PTWC SC3
Latitude = 15.57 S
Longitude = 174.58 W
Origin Time = 16:02:00.1 (UTC)
Depth = 200 Km
RMS = 1.36 sec
Gap = 15 degrees
95% confidence ellipse: - Semi major = 4.7 Km
- Semi minor = 3.4 Km
- Azimuth of major axis = 130 degrees
Number of data used = 358
Preliminary location computed on Wed May 10 16:26:05 2023 (UTC)
Done by Gilles Mazet-Roux
Comments :
Message number: 3455
All magnitudes estimations :
Mi7.4 (AT) Mw7.5 (AUST) M 7.6 (DJA) Mw7.5 (GFZ) M
B7.0 (GNS) Mb6.9 (GSRC) Mw7.3 (INGV) Mw7.1 (KAN) M
w7.2 (MAD) Mw7.4 (MMD) Mw7.6 (NEIC) Mi7.4 (PT) Mw
7.4 (PTWC) M 7.4 (SC3)
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