|SelkerMetrics provides a range of professional services associated
with measurement and analysis. Our projects range from
distributed temperature measurements in surface and groundwater, to the
detection of groundwater movement and seeps and the development of
site-specific groundwater budgets and models. We have expertise
Distributed Temperature Sensing (DTS).
Fiber optic cables, paired with specialized electronics and software,
can precisely and continuously measure temperature at thousands of
locations over long distances and large areas. SelkerMetrics has
pioneered the use of this technology for hydrogeology and environmental
placement. SelkerMetrics has
a simulation model to estimate the likelihood of detecting seeps of
various sizes, locations, and orientations for given cable
layouts. This system addresses uncertainties and allows for
anisotropies in the geology, including permeable layers and salt-water
wedges. This offers clients and regulators a quantitative
basis for evaluating layouts and confidence in the effectiveness of a
deployment for detecting seeps of interest.
Optic Cable Cleaning. SelkerMetrics has developed
proprietary special-purpose cable cleaning equipment. These
systems operate largely in situ, so that when the
cable is retrieved from a deployment there is no need or minimal need
for further cleaning or disposing of material from the site.
Fiber Optic Deployment and Retrieval. We welcome novel and challenging deployment conditions, and have developed methods and tools for these applications. The devil is in the details when handling and securing a valuable cable that can be damaged with improper handling or anchoring. For this reason we have developed special tools and systems for deployment, retrieval, floating, sinking, positioning, splicing, anchoring, and even plowing the cable into soils and sediments.
Analysis and Presentation.
of the DTS system is providing a data set that provides high
spatial and temporal resolution over a large area. However, this
also means that we typically collect millions of values at an
installation. The analysis and presentation of such large data
sets is critical to understanding a site and conveying the situation to
regulators and others. We use methods from signal processing and
statistics to find the meaning that can be hidden in the data. We
also use vivid graphics, including 2-d, 3-d, and animations, to share
our findings with clients and interested parties.
John Selker is one of the world’s leading experts on the application of
DTS technology to hydrology and environmental monitoring. He is
effective presenting results in a variety of contexts, including in
legal and regulatory proceedings.