Start Date
18-9-2023 3:45 PM
End Date
18-9-2023 5:00 PM
Access Type
Open Access
Abstract
Milankovitch cycles are incoming solar radiation (insolation) cycles forced by variations in Earth’s orbital eccentricity, axial obliquity and precession, and are recorded on Earth in cyclostratigraphy. Insolation undergoes major daily and annual cycles with weak modulation from the obliquity variation. Thresholds in the Earth’s climate response to insolation generate the strong precession signals commonly observed in cyclostratigraphy. Dr. Hinnov will demonstrate these and other features using the insolation equation, and will discuss the manifestation of these features in key cyclostratigraphic sections.
Biography
Linda A. Hinnov earned a B.A. in Music from Princeton University, an M.A. in Geophysics from the University of Texas at Austin, and a Ph.D. in Earth Science from Johns Hopkins University. She specializes in the analysis and modeling of geological data relating to Earth’s past climate variations and its drivers. She has worked in the geophysical exploration industry, at the Earth Orientation Department of the United States Naval Observatory, and at Johns Hopkins University. Today she is a professor in the Department of Atmospheric, Oceanic, and Earth Sciences at George Mason University and coordinates the ongoing multi-university CycloAstro Project, which seeks to acquire new empirical knowledge of Solar System dynamics and Earth system sensitivity from the global cyclostratigraphic record.
Additional Links
ORCID
Inner workings of Milankovitch cycles
Milankovitch cycles are incoming solar radiation (insolation) cycles forced by variations in Earth’s orbital eccentricity, axial obliquity and precession, and are recorded on Earth in cyclostratigraphy. Insolation undergoes major daily and annual cycles with weak modulation from the obliquity variation. Thresholds in the Earth’s climate response to insolation generate the strong precession signals commonly observed in cyclostratigraphy. Dr. Hinnov will demonstrate these and other features using the insolation equation, and will discuss the manifestation of these features in key cyclostratigraphic sections.