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The seismology community has long regarded road vibrations as noise that affects seismic observations
The road source represented by high-speed rail is a typical mobile combined source, which is significantly different from the traditional point source, and its wave field characteristics need to be further studied
In a recent study, the team of Prof.
Figure 1 Journal cover and article homepage
The article proposes that, for high-speed trains running on viaducts, a series of eigenfrequencies (“vehicle frequencies”) periodically generated by the carriages do not produce Doppler effects; ”), there is the Doppler effect, and there are blue shifts and red shifts before and after the train
Figure 2 Three synthetic records (a~c) and two actual records (d, e)
(a) A single set of wheels for a single car; (b) 4 sets of wheels for a single car; (c) 4 sets of wheels for a multi-car
The paper further proposes a medium wave velocity measurement method based on the Doppler effect
Fig.
The results of (a) and (c) are from station RD002; the results of (b) and (d) are from all stations
Publication information
Chinese: Jiang Yiran, Ning Jieyuan, Wen Jingchong, Shi Yongxiang.
English: Jiang Y, Ning J, Wen J, Shi Y.
