Publication Date:
2020-02-12
Description:
Spectral analysis of regionally recorded Lg waves is performed to determine source parameters such as seismic moment, source radius and stress drop of earthquakes in the Baltic Shield, and to derive regional spectral scaling relations. The slope of the curve relating seismic moment to corner frequency is steeper than -3, which suggests a departure from a constant stress drop scaling relation proposed for large earthquakes. The derived relationship between the seismic moment (M "SUB o" ) and magnitude (M "SUB L" ) is: log M "SUB 0" - 16.93 + 1.01 M "SUB L" (for 2 = or 〈 M "SUB L" = or 〈 5.2). -from Authors
Keywords:
550 - Earth sciences
Type:
info:eu-repo/semantics/article
Format:
application/pdf