Continuous 40 samples/sec waveform data from broadband, three-component seismographs PAL (Palisades, NY; STS-2 seismometer, T0=120 sec) and NCB (Newcomb, NY; CMG-40T seismometer, T0=30 sec) are available from IRIS/DMC for period covering:

Interested users can request the waveform data to IRIS/DMC by using E-mail requests and other means. In case of E-mail request, station code is PAL & NCB and the network code is "LD".

PAL LD 1994 08 01 12 00 00.0 1994 08 01 12 30 00.0 3 BHZ BHN BHE

NCB LD 1999 05 01 12 00 00.0 1999 05 01 12 30 00.0 3 BHZ BHN BHE

We will continue to submit the continuous, broadband waveform data recorded at PAL & NCB to IRIS/DMC for further dissemination to other scientists and to public users.

When felt earthquakes or significant events occurs in the northeastern United States, we put seismic phase arrival picks, short-period and broadband waveform data into LCSN web site. The information can be easily downloaded by users via the Internet. Additional waveform data requested by users, which include neighboring seismographic network operators, Geological Survey of Canada, Ottawa, high school teachers and students, are also processed and written into SEED format for download by users. Our experience indicates that it is the most efficient method to disseminate to multiple users without additional efforts. The URL for LCSN web site is:

http://www.ldeo.columbia.edu/LCSN.

Users can also navigate from the the LDEO home page, at:

http://www.ldeo.columbia.edu,

by clicking "Solid Earth", followed by "Lamont-Doherty Cooperative Seismographic Network". Waveform data of the selected events in SEED format can be found in "Data Access & Archive"