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...

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...
View from the Horton Grand
 Lots of people have heard of the Horton Grand Hotel in downtown San Diego, CA. Here\'s a view of the hotel that not too many people see - a view from...
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...
Civil Modal Analysis
We\'ve received several inquiries on how civil modal analysis is performed and what instruments are used. Shown in the photo is ISE\'s \'modal sledgeham...
Structural Risk Assessment
Structural Risk AssessmentISE’s structural risk assessment services are a natural extension of our structural dynamics services. We take the concept...
Noise Control & Mitigation
ISE\'s Noise Monitoring & Noise Control SolutionsISE specializes in custom noise control and monitoring solutions for every imaginable industry app...
Environmental GIS
Environmental GIS Solutions at ISEISE provides a comprehensive set of cost-effective Geographic Information System (GIS) mapping services built around...
Structural Dynamics Analysis
Structural Dynamics Analysis at ISEISE is a recognized expert in the field of structural and soil dynamics having developed several cutting-edge techn...
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...
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...
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...
Laboratory Services
Physical Laboratory Services Available at ISEISE maintains a secure physical science laboratory traceable to standards set forth by the American Natio...
Electromagnetic Assessments
Electromagnetic Pollution Control at ISEISE provides a complete suite of electromagnetic field (EMF) and Radio Frequency (RF) services designed to det...
Mass Spectrometry at ISE
ISE has again raised the environmental bar to new levels by adding Mass Spectrometry to our list of in-house air quality monitoring services. Our SRS ...
Air Quality Conformity Studies
Air Quality Conformity at ISEISE offers a comprehensive suite of air quality and air toxics analyses geared principally towards prediction and mitigat...
Historic Preservation
Historic Preservation Services at ISEISE’s historical preservation services are a natural extension of our structural dynamics services which we hav...
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...
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...
Expert Witness / Litigation Assistance
Expert Witness & Litigation AssistanceAt the heart of any forensic problem involving the laws of physics are two fundamental quantities: the path ...
Environmental Impact Reporting
Environmental Impact ReportingAll of ISE’s technical services are available in a variety of environmental formats to satisfy local, state, and feder...

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.