The Iranian long period array (ILPA)

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B. Akasheh
I. Eshghi
R. Soltanian


The extended range 7 elements (ER7) seismic array, ILPA, has been installed in Iran. Construction was started in the winter of 1973 as a joint undertaking of the governments of Iran and the United States of America. This array began its operation in January 1976.

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Akasheh, B., Eshghi, I., & Soltanian, R. (1976). The Iranian long period array (ILPA). Journal of Geophysics, 42(1), 159-162. Retrieved from


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Texas instruments incorporated: Technical manual, operation and maintenance instructions, ER7 seismic system, 14-08-0001-14031 1 August 1975

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