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- W4253401240 abstract "Abstract. The magnetic signature of an urban environment is investigated using a geographically distributed network of fluxgate magnetometers deployed in and around Berkeley, California. The system hardware and software are described and initial operations of the network are reported. The sensors measure vector magnetic fields at a 3,960 Hz sample rate and are sensitive to 0.1 nT / √Hz. Data from individual stations are synchronized to ± 120 μs using GPS and computer system clocks and automatically uploaded to a central server. We present the initial observations of the network as well as preliminary efforts to correlate sensors. A wavelet analysis is used to study observations of the urban magnetic field over a wide range of temporal scales. The Bay Area Rapid Transit (BART) is identified as dominant signal in our observations, exhibiting both aspects of broadband noise and coherent periodic features. Significant differences are observed in both day/night and weekend/weekday signatures. A superposed epoch analysis is used to study and extract the BART signal." @default.
- W4253401240 created "2022-05-12" @default.
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- W4253401240 date "2018-10-23" @default.
- W4253401240 modified "2023-09-29" @default.
- W4253401240 title "A Network of Magnetometers for Multi-Scale Urban Science and Informatics" @default.
- W4253401240 doi "https://doi.org/10.5194/gi-2018-36" @default.
- W4253401240 hasPublicationYear "2018" @default.
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