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🌎 1978 M7.3 Tabas earthquake

[[TOC]]

📂 The repository

This repository hosts detailed information about the 1978 M7.3 Tabas earthquake in Iran.

Available information in the folders:

  • Impact
  • Recording stations
  • Ruptrues
  • OpenQuake_gmfs

🚀 The earthquake at a glance

The 1978 Tabas earthquake occurred on September 16 at 19:05:55 local time in central Iran. The shock measured 7.4 on the moment magnitude scale and had a MMI of IX+ (Violent). The death toll was in the range of 15000–25000, with severe damage occurring in the town of Tabas. Eighty percent of the human deaths occurred in Tabas, but a total of 85 villages were also affected. This seismic force was felt in Tehran, about 610 kilometers (380 mi) away. About 55–85 km (34–53 mi) of ground deformation was observed, with about 1.7 meters (5 ft 7 in) of maximum slip (Wikipedia).

Type of sequence:

  • Only one significant M5 aftershock occurred (Wikipedia).

Occurrence of other phenomena:

Ground shaking

The estimation of the ground shaking has The folder OpenQuake_gmfs stores the required input files to generate the ground motion fields considering different rupture solutions and conditioning the ground shaking to the recording stations for the event, when available. The figures below present an example of the results, showing the median ground motion fields with and without conditioning the ground shaking for the rupture and ground motion model that indicates the lowest nominal bias.

☄️ Consequences

The information collected for the consequences of the event and the corresponding references is available in the Impact folder. When available, information at different geographical levels is provided considering the building damage, economic losses and human impact.

A summary of the main consequences of the event is available in the earthquake_information.csv file:

FIELD DESCRIPTION
Year 1978
Country Iran
Region Yazd
Event_Name Tabas
Local_Date 16/09/1978
Local_Time 19:06:00
Longitude 57.44
Latitude 33.37
Depth_(km) 33
Mw 7.3
Max_Intensity_(MMI) IX
Fault_mechanism Thrust
Tectonic_region_type Active Crustal
Fatalities 14800-25000
Injured 6400
Displaced_Population nan
Affected_Population 40000-53994
Affected_Units nan
Damaged_Units nan
Collapsed_Units 15000 Buildings
Economic_Losses 11-50 M USD
Insured_Losses nan
Induced_Effects nan
USGS page https://earthquake.usgs.gov/earthquakes/eventpage/usp0000wjx/executive
Wikipedia page https://en.wikipedia.org/wiki/1978_Tabas_earthquake

🌟 Contributors

We would like to acknowledge the many contributors to the Earthquake Consequence Database.