ISE HomeAcoustics & VibrationNews and EventsOlivenhain Dam Construction Site

Here's a photo from the archives of the Olivenhain Dam inundation area circa 1998 prior to construction of the dam. ISE took this photo during some early field reconnaissance of the site to quantify some of the site constraints. This area is now currently under approximately 200-feet of water.

The blasting vibration data obtained from this site was instrumental in developing a new seismic surface wave prediction model - the R-Wave model.

What's New at ISE...

Shake Table Testing
Laboratory Shake Table Testing at ISEISE houses a complete dynamic analysis laboratory consisting of an APS Dynamics long stroke shake table, capable...
Electromagnetic Assessments
Electromagnetic Pollution Control at ISEISE provides a complete suite of electromagnetic field (EMF) and Radio Frequency (RF) services designed to det...
Kinetics & Kinematics
Kinetic & Kinematic Analyses at ISEAt the heart of any forensic problem involving the laws of physics are two fundamental quantities: the path of ...
Laboratory Services
Physical Laboratory Services Available at ISEISE maintains a secure physical science laboratory traceable to standards set forth by the American Natio...
Environmental Vibration Solutions
Environmental Vibration Solutions at ISEISE is a recognized leader in mechanical and dynamic vibration analysis, and has a full range of portable moda...
Architectural Acoustics
Architectural Acoustics at ISEISE is one of only a small handful of firms offering a complete suite of acoustical engineering services tailored specif...
Olivenhain Dam Construction Site
Here\'s a photo from the archives of the Olivenhain Dam inundation area circa 1998 prior to construction of the dam. ISE took this photo during some e...
One Way to Stop Noise
We\'re not sure how well this works, but you have the give the City of San Francisco a \'A\' for effort.This sign is located at the bottom of Lombard Str...
R-Wave Seismic Blasting Model
The ISE Rayleigh Wave (R-Wave) seismic vibration prediction model hit another milestone in 2011 in development by being able to accurately predict sur...
Environmental ESA & Due Diligence
Phase I ESA\'s & Environmental Due DiligenceISE provides a broad suite of environmental site assessment and due diligence services geared towards c...
In-Situ Seismic Testing / Blast Response Mitigation
Geophysics & Blast Response Mitigation at ISEISE has been working for close to two decades on innovative and unique engineering solutions to the p...
Historic Preservation Plans
Historic Preservation PlansISE’s structural risk assessment services are a natural extension of our structural dynamics services. We take the concep...
Computational Fluid Dynamics
Computational Fluid Dynamics at ISEISE are experts in the field of computational fluid dynamics (CFD) and wave propagation analysis. We utilize, and h...
Global Warming and the Age of Unenlightenment
The following article is an opinion piece that reflects the scientific thoughts of the author. It is my opinion based upon my review of the science an...
Structural Risk Assessment
Structural Risk AssessmentISE’s structural risk assessment services are a natural extension of our structural dynamics services. We take the concept...
Lighting & Photometric Assessments
Lighting & Photometric AssessmentsISE provides a complete range of lighting and photometric services geared towards commercial and industrial comp...
ISE SOQ & Capability Statement
       ISE 2024 Statement of Qualifications (SOQ)Click on the image to the left to view our Statement of Qualifications (32.4 MB) as a PDF. You c...
Environmental GIS
Environmental GIS Solutions at ISEISE provides a comprehensive set of cost-effective Geographic Information System (GIS) mapping services built around...
Modal Analysis
Modal Analysis Services Available at ISEModal analysis is the experimental determination of the vibrational properties (i.e., normal modes) of a physi...
Acoustical Analysis & Design
Acoustical Analysis & DesignISE\'s staff is formally trained in the requisite fields of acoustics, fluid mechanics, and gas dynamics allowing us to...

Featured Video Clip (Shock Wave)

A video taken by ISE showing the supersonic expansion of high pressure natural gas in a pipeline. 

The shock wave is clearly visible at the 1:00 min mark as a white cloud above the end of the pipe and produces an acoustic overpressure of close to 140 dB - which is as loud as a rocket engine.