To view and download the available data, the users have to select one of the three sections available in the right box of the ISMD home page
(i.e. EARTHQUAKES, STATIONS, WAVEFORMS).

After user registration and/or login the waveforms and the response spectra are downloadable both from the event and the station web pages.

Moreover, from the session WAVEFORMS, it is possible to search and download the waveforms (and metadata) associated to different earthquakes, through a selection based on several ground motion parameters and/or site classification.

Data are downloadable as:
SAC raw format (*.sac, counts), ASCII processed acceleration (*.DAT, cm/s²), ASCII processed velocity (*.VEL, cm/s), ASCII processed displacement (*.DIS, cm) and ASCII response spectra (acceleration, velocity and displacement).
From January 2019 raw-data are also available in Miniseed format (*.seed, unit counts).

In each case the system provide a single "tar" file
(e.g. ismd_list_event_20160710003706_acc_dw160715135248.tar), including data compressed in "bz2" format
(e.g. IV.ACER..HNE.D.20160710.003706.ISMD.DAT.bz2).
In order to obtain the usable data, please use the commands:

tar -xvf file.tar
bunzip2 file

For further information mail to [javascript protected email address]