Regional Wave Attenuation Eurasia
Abstract
Presented in the Scientific Report Number 2 are our research efforts in the first year of our two-year project in regional wave studies in Eurasia. Based on the reversed two-station method (RTSM), our research has led to development in methodology, i.e., formulation of the source pair/receiver pair (SPRP) method and the extended RTSM, suitable for attenuation study using data from sparsely-located stations. These methods are more flexible in making use of the regional data from Eurasia. Compared to the RTSM, results from either method lead to measurements of the frequency-dependent anelastic attenuation in an area instead of inter-station (event) paths. Application of the SPRP method to the CDSN/IRIS data from regional and far-regional distances has shown that Lg attenuation at low frequencies (0.1-1.0 Hz) exhibits greater stability and consistency than its higher-frequency counterpart. Application of the extended RTSM to the local and regional recordings from Beijing Telemetered Network (BTN) has shown that the area under BTN is characterized by relatively high Lg attenuation, compared to the non-Tibetan portion of the Eurasian continent. Lg, ATTENUATION, EURASIA, IRIS, CDSN, BTN, TIME-DOMAIN ANALYSIS, REGIONALIZATION
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1992
- Accession Number
- ADA257852
Entities
People
- Kin-yip Chun
- Tianfei Zhu
- Xiao Rung Shih
Organizations
- University of Toronto