Welcome to the web site of the multichannel analysis of surface waves (MASW) method.

MASW is a seismic exploration method evaluating ground stiffness in 1-D, 2-D, and 3-D formats for various
types of geotechnical engineering projects.  Since its first introduction in the late 1990s, it has been utilized by
many practitioners and researched by many investigators worldwide.

The main purpose of this site is to provide those practitioners, researchers, and engineers who tap on the
feasibility of the method for their own projects with general information about the MASW method.  The site’s
main categories include
what it is, procedure, table of optimum acquisition parameters, history of surface-wave
method, types of MASW method, and applications.  Also included is a general description of the seismic
method.  These contents are explained in the simplest manner possible, and the articles listed in the  
References section will cover in-depth technical aspects.

This site is operated by
Park Seismic LLC specializing in the service of the MASW method.
Since version 1.01 was released a year ago (September 2015), the functionality and user friendliness of ParkSEIS© (PS) have been greatly improved
mostly due to extensive in-house operations, but also from suggestions and reports from users.  Most bugs found were minor, but a few of them were
critical.  All bugs we found have been fixed.  Updates, additions, and modifications incorporated into the current version (v. 2.0) are explained
here.  For a
brief introduction of the software features, click
here.  To go to ParkSEIS home page, click here.

Version 2.0 is currently on special promotion (until October 31, 2016) that provides an additional license on the purchase of the USB-dongle version.  

ParkSEIS provides the most up-to-date comprehensive tools in the history of MASW development.  The technical algorithms have evolved through the last
two decades of
author's career as developer and practitioner of MASW, making it the most robust and reliable MASW analysis tool available today.  A brief
introduction of the software features is presented
here.  More technical details of the software can be found online.