Tengger Caldera is a stratovolcano complex located in Indonesia at an elevation of 2,329 meters, positioned within a subduction zone and continental crust tectonic setting. According to official records from the Smithsonian Global Volcanism Program, the volcano has a history comprising 67 confirmed eruptions. These events span a timeline from prehistoric isotopic records dating back to the 53rd century BCE through to modern historical observations ending with an eruption on December 13, 2023.
Understanding the Eruption Record
The confirmed eruption record for Tengger Caldera combines ancient events determined through scientific dating methods with direct human observations from later centuries. Early prehistoric events, such as a confirmed eruption assigned to 5260 BCE, rely on uncalibrated radiocarbon isotopic evidence and carry a significant time uncertainty of 780 years. Other prehistoric entries, such as an event in 830 BCE, are recorded with narrower radiocarbon uncertainties and include assigned Volcanic Explosivity Index (VEI) ratings.
As historical reporting methods advanced, the frequency and detail of recorded activity increased substantially. The profile documents activity across multiple distinct areas within the complex, including the Sandsea caldera and Bromo. For instance, observations recorded a series of events in the 19th century, such as an eruption starting on November 9, 1844, and a subsequent sequence spanning from January 13, 1893, to March 27, 1893. The latest recorded confirmed eruption in the current dataset took place on December 13, 2023, carrying a VEI of 1.0.
Chronological Distribution of Activity
Official records show that the 67 confirmed eruptions are unevenly distributed across centuries. Historical activity intensities and documentation levels vary widely by era:
- 53rd century BCE: 1 confirmed eruption
- 9th century BCE: 1 confirmed eruption
- 2nd century CE: 1 confirmed eruption
- 4th century CE: 1 confirmed eruption
- 16th century CE: 1 confirmed eruption
- 19th century CE: 30 confirmed eruptions
- 20th century CE: 26 confirmed eruptions
- 21st century CE: 6 confirmed eruptions
Across the entire catalog where observations or estimates were compiled, VEI values reach a maximum recorded level of 4.0, representing the largest known explosive magnitude captured in the official records for this volcano.
Frequently asked questions
Where is Tengger Caldera located?
Tengger Caldera is located in Indonesia at latitude -7.942 and longitude 112.95, with an elevation of 2,329 meters.
How many confirmed eruptions does Tengger Caldera have?
The Smithsonian Global Volcanism Program records 67 confirmed eruptions for Tengger Caldera.
When did the most recent recorded eruption occur?
The latest recorded confirmed eruption occurred on December 13, 2023.
What is the largest recorded VEI for Tengger Caldera?
The largest recorded Volcanic Explosivity Index (VEI) for the volcano is 4.0.
Image credits
- Jakub Hałun — Wikimedia Commons source — CC BY-SA 4.0
Sources and further context
Official datasets support the event-specific facts.