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Moti

Stratovolcano in Indonesia

Key Facts

Elevation

927 m (3,041 ft)

Type

Stratovolcano

Location

0.454°, 127.411°

Region

Halmahera Volcanic Arc

Rock Type

Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone

Location

Loading map...

Overview

The 5-km-wide island of Moti, also known as Motir, is part of a chain of volcanic islands off the western coast of Halmahera. It is located north of Makian and south of Mare and Tidore islands, and is surrounded by coral reefs. The truncated, conical island contains a crater on its SSW side.

Moti was mapped as Holocene by Apandi and Sudana (1980). A minor eruption was reported in 1774 or shortly before, but Gogarten (1918) indicated that this event was confused with the October 1773 eruption of nearby Gamalama, which could have dropped ash on Moti.

Volcanic Hazards & Risk Assessment

Primary Hazards

  • Pyroclastic flows
  • Lava flows
  • Volcanic bombs and ballistics
  • Lahars and mudflows

Risk Level

Population at RiskModerate
Infrastructure RiskModerate
Aviation RiskSignificant

Geological Composition & Structure

Rock Types

Primary
Andesite / Basaltic Andesite
Silica Content
Intermediate (57-63% SiO₂)

Tectonic Setting

Subduction zone
Formed by oceanic plate subduction, typically producing explosive eruptions due to water-rich magmas.

Age & Formation

Epoch
Holocene
Evidence
Evidence Credible

Eruption Statistics & Analysis

MetricValueGlobal RankingSignificance
Total Recorded EruptionsUnknownLowModerately active volcano
Maximum VEIVEI UnknownMinorLocal impact potential

Monitoring & Alert Status

Monitoring Networks

Global Volcanism Program
International eruption database

Current Status

Normal
No recent activity. Routine monitoring continues.

Nearby Volcanoes in Western Pacific Volcanic Regions

Regional Volcanic Activity
The Western Pacific Volcanic Regions contains multiple active volcanic systems. Cross-regional magma interactions and tectonic stresses can influence eruption patterns across the entire arc. Monitor regional seismic activity and volcanic alerts.

Quick Info

  • Smithsonian ID: 268063
  • Evidence: Evidence Credible
  • Epoch: Holocene

About the Photo

Clouds cap the top of the 5-km-wide island of Moti (left-center), also known as Motir. This island is located north of Makian (bottom-left) and south of Mare (top-left) in this NASA Landsat image. Moti lies along a N-S-trending chain of islands off the western coast of Halmahera Island (right). The truncated, conical island of Moti is surrounded by coral reefs, and contains a crater on its SSW side.

NASA Landsat 7 image (worldwind.arc.nasa.gov)

Basic Information

This page shows basic data from the Smithsonian Global Volcanism Program. For more detailed information, visit the official Smithsonian page.