Kyrgyzstan, Toktogul: 1992-2017

The Toktogul cluster is named for town of Toktogul, Kyrgyzstan, and the nearby Reservoir of the same name. The cluster is divided into two subclusters, one north of the reservoir and one to the south. The cluster includes the Ms 7.3 earthquake on August 18, 1992 that devastated the town of Susamyr about 40 km to the east, and a half-dozen of the larger aftershocks. On December 22, 2009 a large (4.4 mb) chemical explosion was used in the construction of the hydroelectric dam that created the Toktogul Reservoir. The shot, known as "Kambarata" and included in the cluster, was well instrumented and serves as a calibration event for the cluster. Calibration of the cluster is done with direct calibration, but the ground truth location and [...]