Horizontal Vertical Spectral Ratio – EASY HVSR

€590.00 exc. VAT

(20 customer reviews)

Horizontal Vertical Spectral Ratio – EASY HVSR allows the analysis of the spectral ratio of microtremors recorded with a single station.
The simplicity of use and speed of execution of the calculations allow the user to get immediate results in the estimation of resonance frequency, stratigraphic profile and equivalent shear wave velocity Vs, eq, All according to the guidelines suggested by the SESAME project. The software imports SEG2, SAF and ASCII files.

 

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Description

CUSTOMIZING ANALYSIS

The user can choose different ways to process the data, choosing the most appropriate methods for the directional sum of the traces in the horizontal directions, for the smoothing and for the frequency band to be analyzed. The user can choose from the most simple arithmetic mean to the mean square or geometric mean among the directional sums available. Among the methods for data smoothing suggested by the SESAME project can be chosen: by Konno & Ohmachi, Triangular constant and Triangular proportion. The user can choose the time windows to include or exclude with a simple checkmark, seeing in real time the changes made. The input data can be automatically filtered.

DISPLAYING DATA

All results are displayed in customizable charts. The available charts are the traces in the three directions analyzed with the representation of the time windows chosen; the average spectrum of the traces; the map for the verification of the recording’s stationarity; the map for the verification of the recording’s directional isotropy; The spectral ratio H/V with its confidence interval, having them with the possibility to overlap the ellipticity curve of more stratigraphic models not only of the fundamental mode, but also higher ones; the graphical representation of the stratigraphic profile; the velocity profile associated with the stratigraphy.

RESULTS

The software automatically evaluates a first estimate of the stratigraphic model that best approximates the H/V spectral behaviour recorded in situ and analyzed so the user can refine it more rapidly. Is thus obtained, in addition to the natural vibration frequency of the stratigraphy typical to the HVSR technique, the immediate assessment of Vs30 and the shear wave velocity profile of the stratigraphic model assumed. On the chart of the spectral ratio, H/V are visible; in addition to the H/V curve with its confidence interval, all the ellipticity curves of the various modes of each stratigraphic model that the user can decide to add. In this way, it is possible to compare the differences from a qualitative point of view, and in addition, also a quantitative comparison with the estimate of the mismatch function between the ‘fundamental’ ellipticity curve and the curve of the spectral ratio H/V. Checks accompany all on the reliability of the H/V curve and its peak suggested by the SESAME project.

Trial & ChangeLog

TRIAL
It is possible to request a trial version of this product. To speed up software learning, you can also ask for a live demonstration session. This will allow you to determine if the product meets your requirements. Send an email to: info(at)geostru.eu.

Basic requirements of the system.

Educational version for students and teachers

How to download, install and activate the software

CHANGELOG

2026.26.4.994

21/01/2026

New release 2026

2022.26.4.963

22/02/2023

New release 2022, Bug fix in manual selection

2021.24.4.833

20/05/2020

New release

2020.24.4.733

29/11/2019

Version 2020 has been released

2018.24.4.633

30/09/2018

General bug fix

2018.23.4.533

07/07/2018

Export confidencial curve H/V

New release 2018. Calculate vs,eq.

2017.23.4.333

14/09/2017

Major release of HVSR 2017

2016.23.4.163

15/12/2015

  • Optimization search algorithm resonance frequency 
  • Implemented Bing Maps for locations. 
  • Added support to make the application independent from the international options and language defined within the Control Panel of Windows. The software will use the point as a decimal point and a comma for digit grouping. 
  • Improvement of drawings export in the final report. 
  • Introduced an improvement in smoothing calculation with Triangular constant, Triangular proportional and Moving average techniques. 
  • Improved the processing with customed duration windows. 
  • Implemented the import of drm format files. 
  • Implemented the export of the stratigraphy in .edp files. 
  • Implemented the possibility of contacting GeoStru Staff directly from the software. 
  • Implemented the export of the H/V spectrum in csv format to be used for comparisons with various acquisitions. 
  • Improvement in managing the graphics of the H/V spectra. 
  • Progress in the direction of the inversion models. 
  • Improvement in the export of H/V pictures for the print reports. 
  • Improved the import of SEG2 files. 
  • Implementation of an autonomous system of notification and download of upgrades. 
  • Added new functions for editing the computation report. 
  • Ability to change the display scale for the graphics of given traces. 
  • Optimization of SEG2 file import. 
  • Optimization of trace import from saf files. 
  • Display the coordinates of the H/Vspectral ratio points in the corresponding graphic. 

20 reviews for Horizontal Vertical Spectral Ratio – EASY HVSR

  1. Italian

    Paolo (verified owner) –

    Software molto intuitivo, post processing abbastanza veloce. I modelli sismostratigrafici abbastanza verosimili alle tarature eseguite in situ.

  2. Italian

    luca arieni (verified owner) –

    interfaccia semplice ed intuitiva per elaborazioni standard hvsr

  3. Italian

    Giovanni (verified owner) –

    Il programma permette la elaborazione dei dati in maniera semplice e intuitiva

  4. Italian

    Ernesto de Sena (verified owner) –

    Sono soddisfatto, lo ritengo utile nella professione per l’interpretazione stratigrafica. Alla fine coincidere tutto diventa un po’ laborioso.

  5. Italian

    Antonio Spadaro (verified owner) –

    Software semplice da utilizzare; amplierei la finestra di input degli strati in modo da poterne visualizzare più di 4 simultanemantente rendendo più semplice la modifica degli strati.
    Giudizio complessivo: ottimo prodotto

  6. Italian

    Servizi geotecnici S.r.l. (verified owner) –

    Ottimo, facile, immediato.

  7. Italian

    Gianluca Taddei (verified owner) –

    Buon prodotto, rapida esecuzione e funzionalità abbastanza intuitive.

  8. Italian

    Antonio (verified owner) –

    Ottimo software. L’elaborazione delle tracce acquisite in campagna avviene in pochi passaggi. Si potrebbe, però, implementare nella parte dei criteri SESAME: oltre alla verifica si potrebbe inserire un’altra colonna affianco all’esito con i risultati ottenuti.

    • Italian

      filippo catanzariti (verified owner) –

      Grazie del consiglio lo faremo nella prossima revisione.

  9. Italian

    Gianfranco (verified owner) –

    Software intuitivo, con tutorial semplice ed efficace. Buon compromesso qualità-prezzo

  10. Italian

    Massimo Carnevali (verified owner) –

    Software buono e intuitivo

  11. Italian

    LEONARDO (verified owner) –

    OTTIMO E SEMPLICE DA USARE

  12. Italian

    Lucio (verified owner) –

    Facile e intuitivo come tutti i programmi geostru

  13. Italian

    Gianluca Tomassoni (verified owner) –

    Abbastanza semplice da utilizzare

  14. Italian

    Paolo Calicetti (verified owner) –

    Software intuitivo, facile da usare. Buon compromesso qualità-prezzo.

  15. Italian

    Alessandro (verified owner) –

    Eccellente software

  16. English

    gerardo santini (verified owner) –

    buon software . Lo trovo abbastanza scorrevole e intuitivo. Da poco che lo uso e quindi non mi esprimo sulla qualità dei report ma sembra funzionale per la definizione del modello sismico locale

  17. English

    FABRIZIO CITARRELLA (verified owner) –

    Buon software. Nella sezione “Cenni sulla teoria della tecnica HVSR” della relazione sismica, bisogna correggere la dicitura Vs30 con Vs, eq

    • English

      filippo catanzariti –

      Buongiorno
      Lo faremo oggi ti inviero’ il file per email
      ***
      Hi
      We will do it today. I will send you the file by email
      Thanks

  18. English

    Paolo Nania (verified owner) –

    Software molto versatile ed intuitivo.
    Personalmente, il programma si potrebbe implementare consentendo di aprire e comparare piu’ spettri H/V al fine di poter fare delle speditive valutazioni di zonazione sismica.

  19. Italian

    Francesco Florio (verified owner) –

    software buono, facile da usare. utilissimo

  20. Italian

    Rodolfo Baroncioni –

    ottmo per falicità d’uso e rapidità di verifica. Molto utili anche la verifiche senza somma direzionale, ma con presa in considerazione solo le traccie nord sud oppure est ovest

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