Welcome to BATS Data Center

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Data Availability

BATS is now composed of 21 IES stations and 34 CWB stations. Owing to a formal policy regulation, only IES BB data is accessible through Internet. 16 IES BATS stations can transmit data back to DC in a near real-time manner. Seismic data containing waveforms recorded at all 18 IES stations 3~6 months before present will be archived routinely at BATS DC.

BATS DC is collaborating with IRIS DMC to archive and distribute BATS waveform data in terms of IRIS facilities. The network code of BATS is "TW", which is a registered code under the FDSN framework. Note that only BH? (broadband in 20 samples per second) and BL? (strong motion in 20 samples per second) channels are available in this case.

Due to environmental limitation, GPS timing quality for NACB and WFSB were unstable before May, 2001.

BATS CMT Web citation:
    BATS Centroid Moment Tensor (BATS CMT) catalog search, bats.earth.sinica.edu.tw/CMT_Solutions/Solutions.html.

If you publish your work by taking advantage of any BATS waveform data, please provide proper acknowledgement to the Institute of Earth Sciences, Academia Sinica, Taiwan (BATS waveform data is provided by the Insitute of Earth Sicences, Academia Sinica, Taiwan).


Real-Time Data

Since 2004, BATS has exchanged real-time data streams with IRIS for 7 BATS stations (KMNB, NACB, SSLB, TPUB, TWGB, YHNB, and YULB). Users can access to this real-time dataset through IRIS "BUD" or "Vase" interfaces.


Archived Data

The annually archived BATS waveform data will be sent to IRIS with a ~1.5 years delay. For this dataset, IRIS provides several ways for users to request the waveform data. (1) Event based data request: WILBER-II is an efficient interface to browse event data, which we strongly recommend if you are aiming at specific earthquakes. (2) Multiple requests for continuous data: If you intend to request many segments of continous waveform data, you may want to utilize BREQ_FAST system with either e-mail based or web based. Alternatively, JWEED system provides as another event-related request tool, which can run on any platform with Java.


Station Information

If you select full-SEED output files, then the station inofrmation, including coordiante, instrumentation and response, will be attached in the files. You may also look up the details from webpage at :



New Database System @ IES

We are working on an on-line data request interface for BATS waveform data at BATS DC. This interface (beta version) is now available at

BATS Waveform Archive System






Last updated: Oct 30, 2009