ESM REXEL-spectra-selection Web-Service

The ESM REXEL-spectra-selection web-service provides machine-friendly access to response spectra included in the ESM Database. Data may be filtered by ground motion parameters or related meta-data, e.g. by magnitude, distance, PGA, etc. A complete list of supported options and usage examples is available in the query-options webpage. Requests must use HTTP-POST method.

Available URLs

• query
• version

Feature Notes

• HTTP-POST target argument is required (the output ZIP file from ESM REXEL-target-spectrum web-service can be passed)
• selection of query-options is mutually exclusive for ground motion parameters (e.g. searching for waveforms by PGA criteria is not compatible with Arias Intensity criteria)
• output data are provided in compressed archive (format zip) containing several ascii .txt files with Unix line endings:
  1. list of selected records and corresponding RMS-based scores respect to target spectrum by ascending order ('LIST.TXT')
  2. table of Pseudo-Spectral Acceleration (PSA) values arranged by rows for each selected record and by columns for each used period; generated files are 'SPECTRAXY.TXT' when components is set to '1', 'SPECTRAX.TXT' and 'SPECTRAY.TXT' when components is set to '2' or 'SPECTRAZ.TXT' when components is set to '3')
  3. summary file resuming the query options ('SPECTRA_SELECTION_SUMMARY.TXT')
  4. list of spectral periods ('PERIODS.TXT')
  Files described at numbers 1 and 2 of the above list are provided with the prefix "ADIM_" also. These files are used in the ESM REXEL-run-matching web-service when adimensional-flag is set to '1'.
• results are limited to 1000 response spectra per single request

Related Services

ESM REXEL-spectra-selection web-service works in combination with:

• ESM REXEL-target-spectrum web-service allows computation of design acceleration 5%-damping elastic spectra
• ESM REXEL-run-matching web-service searches for sets of waveforms combinations that on average match the target spectrum within a specified tolerance
• ESM REXEL-outputs web-service returns final results
• ESM REXEL-plot web-service generates visual representation from ESM-REXEL outputs file

Backend Python software used by this web service was originally developed by Puglia R. and Sgobba S., and it is currently maintained by Felicetta C., Russo E., amd Sgobba S.