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Welcome to the Department of Earth, Planetary, and Space Sciences at UCLA. Our mission is to understand and protect our home in the universe through discovery, education, and outreach. To further this mission we strive to foster an inclusive culture of respect, collaboration, and openness to new ideas and methodologies.

News and Announcements


Emeritus Professor Dave Jackson Departmental Memorial - 28 June, Faculty Center

On June 28 at 6:00 PM the EPSS department will hold a memorial for Dave …

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EPSS Professor Jean-Luc Margot Featured on ABC Radio National's The Science Show

In the segment broadcast May 26th, 2023, Margot talked about the UCLA SETI group’s citizen …

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Growing My Own Roots - EPSS PhD Student Megan Li's Story

Over 50 years ago, EPSS PhD student Megan Li’s grandfather immigrated from Taiwan to pursue …

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Seminar of the Day

Geophysics and Tectonics Seminar
Wednesday Jun 7 12:00p.m. - 1:00p.m.
Presented By:
Chen ji - UCSB

It has been long recognized that the source parameters of earthquakes, such as rupture area, fault length, the corner frequency of source spectra, etc., scale with earthquake magnitudes, often exhibiting self-similarities but also considerable between-event deviations (e.g., Aki, 1967; Kanamori and Anderson, 1975). In this study, we introduce a double-corner-frequency …