Reservoir induced seismicity near Heron and El Vado reservoirs, northern New Mexico

I. W. El-Hussain, P. J. Carpenter

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Abstract

Spatial, temporal and magnitude-frequency relationships for earthquakes occurring between 1976 and 1984 near Heron and El Vado reservoirs in northern New Mexico are examined for evidence of reservoir-induced seismicity (RIS). Most of the 264 located shocks, including those with the highest magnitude (maximum M L = 2.7; m b = 3.8), occurred in 1982 when Heron reservoir reached its maximum capacity of approximately 0.5 km 3 and an impoundment depth of 66 m. Between 1976 and 1984, earthquake swarms followed, or were enhanced by, reservoir filling in three out of four cases where filling resulted in new maximum water volumes for Heron reservoir. The spatial and temporal distribution of these events, along with their b-value, suggests most of them have been triggered by reservoir loading. Practical ramifications of this work are that RIS can occur in reservoirs with impoundment depths of less than 100 m and RIS may occur if other dams are located along the historically seismic Archuleta anticline on the eastern margin of the San Juan basin. -from Authors

Original languageEnglish
Pages (from-to)51-59
Number of pages9
JournalBulletin - Association of Engineering Geologists
Volume27
Issue number1
Publication statusPublished - 1990

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reservoir-induced seismicity
Earthquakes
Shock
impoundment
Dams
Water
earthquake swarm
anticline
temporal distribution
Induced Seismicity
dam
spatial distribution
earthquake
basin

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  • Medicine(all)

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Reservoir induced seismicity near Heron and El Vado reservoirs, northern New Mexico. / El-Hussain, I. W.; Carpenter, P. J.

In: Bulletin - Association of Engineering Geologists, Vol. 27, No. 1, 1990, p. 51-59.

Research output: Contribution to journalArticle

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