Seismic Event Dossier•23:45 Local (14:22 UTC)(112y ago)

M 8.2 earthquake
Papua, Indonesia

A magnitude 8.2 (MW) earthquake occurred on 1914-05-26, 23:45 local time (14:22 UTC) (112y ago), centered 135 km SE of Biak (Indonesia). The hypocenter was located at a shallow depth of 15 km. Primary telemetry verified by USGS.

Historical Landmark Earthquake

#40 of All Time

Curated Global Seismic Archive (1700–Present)

Top-100 Earthquakes

A magnitude 8.2 earthquake struck ⁨Papua, Indonesia⁩ on 26 tháng 5, 1914. Documented deaths: 101–1,000.

Documented Fatalities101–1,000Source: NOAA NCEI Significant Earthquake Database

Fault KinematicsActive fault

Equivalent Energy30.09 Mt TNT

Độ lớn

M 8.2

30.09 Mt TNT

Độ sâu

15 km

shallow (Vỏ Trái Đất nông)

Tác động PAGER

red

> 1,000 fatalities

Người bị thương: > 5,000 · ~42.2M cảm nhận được

Bản đồ Tâm chấn & Đứt gãy Tương tác

1.98°S, 136.94°E

Đứt gãy5 km

Phân đoạn Đứt gãy Hoạt động

Slip · ~15.0 mm/yr

Felt byMMI III+

~42.2M exposed

~16.7M strong shaking

Primary SolutionUSGS

USGS#iscgem913984reviewed

1 agencies reporting

Setting2.0°S

Indonesia

Continental / Inland crustal

Seismic Activity & Aftershock Sequence

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

Hover or tap a point to inspect aftershocks and risk probability curve.

<35 km (Nông)35–70 km (Trung bình)>70 km (Sâu)Chấn động chính

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

No felt reports submitted

Macroseismic DYFI verification

Aftershock Sequence

Monitoring

Aftershocks expected (Omori law)

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 / Source	Magnitude (Scale & Diff)	Depth & Diff	Epicenter & Shift (Δd)	Consensus	Event ID / Data
USGS United States Geological Survey · Global / US	M8.2(Mw)Ref	15.0 kmRef	-1.98°, 136.94°Origin	Authoritative	iscgem913984

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

3 khu dân cư

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

Town	Distance	Intensity	Dân số
Biak · Papua	135 km	MMI VIII	103,610
Nabire · Papua	220 km	MMI VII	43,898
Timika · Papua	286 km	MMI VII	26,021

Tectonic setting

Nearest mapped active fault: Phân đoạn Đứt gãy Hoạt động, 5 km away, slip rate ~15.0 mm/yr (GEM Global Active Faults).

M 8.2 earthquake Papua, Indonesia