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Seismic Event Dossier04:17 Local (01:17 UTC)(3y ago)

M 7.8 earthquake Gaziantep, Turkey

A magnitude 7.8 (MW) earthquake occurred on 2023-02-06, 04:17 local time (01:17 UTC) (3y ago), centered 29 km W of Gaziantep (Turkey). The hypocenter was located at a shallow depth of 20 km. Primary telemetry verified by EMSC.

Historical Landmark Earthquake

#18 of All Time

Curated Global Seismic Archive (1700–Present)

Top-100 Earthquakes

A magnitude 7.8 earthquake struck ⁨Gaziantep, Turkey⁩ on 6 Februari 2023. Source: ⁨East Anatolian Fault⁩. Documented deaths: 56,697.

Documented Fatalities56,697Source: NOAA NCEI Significant Earthquake Database
Fault KinematicsStrike-Slip
Equivalent Energy7.56 Mt TNT

Magnitudo

MW
M 7.8

7.56 Mt TNT

Kedalaman

20 km
20 km

shallow (Kerak dangkal)

Dampak PAGER

red
> 1,000 fatalities

Luka-luka: > 5,000 · ~57.6M merasakan

Peta Interaktif Episenter & Sesar

37.17°N, 37.08°E
Sesar5 km
Sesar Anatolia Timur
Strike-Slip · ~15.0 mm/yr
Felt byMMI III+
~57.6M exposed
~18.3M strong shaking
Primary SolutionEMSC
EMSC#us6000jllzreviewed
1 agencies reporting
Setting37.2°N
Anatolia Timur & Kahramanmaraş
Continental / Inland crustal

Seismic Activity & Aftershock Sequence

Timeline of foreshocks, main rupture, aftershocks and machine learning risk probability evolution.

M0.0M4.5M9.0100%50%0%Gempa utama7 Feb12 Feb17 Feb22 Feb27 Feb4 MarM7.8
Hover or tap a point to inspect aftershocks and risk probability curve.
<35 km (Dangkal / Merusak)35–70 km (Menengah)>70 km (Fokus Dalam)Gempa utama
Prakiraan Risiko ML:12h37%24h49%72h64%7d80%

Situation Monitoring

Continuous verification
Multi-agency verification of casualties, tsunami alerts, and seismic sequence

Key facts so far

Casualties
Damage assessment in progress
Tsunami Status
No tsunami threat
NOAA PTWC & regional buoys
Citizen Felt Reports
3.182
Widely felt across region
Macroseismic DYFI verification
Aftershock Sequence
Aftershocks: 50
High Omori aftershock probability
LightGBM hazard model forecast
Multi-agency seismic telemetry active. Awaiting wire headlines.

Agency Discrepancy Matrix (Cross-Network Verification)

Comparing multi-network solutions from primary and teleseismic monitoring agencies.

Network / SourceMagnitude (Scale & Diff)Depth & DiffEpicenter & Shift (Δd)ConsensusEvent ID / Data
EMSC
European-Mediterranean Seismological Centre · Global / EU
M7.8(Mw)Ref
20.0 kmRef
37.17°, 37.08°Origin
Authoritative
us6000jllz

Why do agency magnitudes differ? Seismological agencies use different instrumentation networks, crustal velocity models, and mathematical magnitude scales (e.g. Moment Magnitude Mw vs Local Richter ML vs Surface Wave Ms). Differences of 0.1–0.3 are common and reflect physical observation geometry rather than errors.

Where it was felt

6 permukiman

Shaking intensity is modelled from magnitude, depth and distance (GMPE attenuation), not reported by residents.

TownDistanceIntensity
Gaziantep · Gaziantep29 kmMMI IX
Kilis · Gaziantep50 kmMMI IX
Kahramanmaraş · K. Maras50 kmMMI IX
Izaz · Aleppo (Halab)65 kmMMI VIII
İskenderun · Hatay104 kmMMI VIII
Aleppo · Aleppo (Halab)105 kmMMI VIII

Tectonic setting

Nearest mapped active fault: East Anatolian Fault, 5 km away, slip rate ~15.0 mm/yr (GEM Global Active Faults).

Profil Seismik Regional

Anatolia Timur & Kahramanmaraş

Lihat pemantauan seismik langsung, tolok ukur bahaya historis, model pergeseran sesar, dan interval perulangan untuk zona ini.