Comparison of three pH sensors co-deployed in a high variability environment
Presentation Abstract
Three pH sensors were deployed in a channel in Padilla Bay for several multiple week deployments both in winter and summer seasons. One sensor (a YSI EXO sonde) is part of the long term monitoring of the Padilla Bay National Estuarine Research Reserve. The second sensor is a Satlantic SeaFET, and is part of the Washington Ocean Acidification Center’s monitoring effort. The third sensor is a custom built sensor based on the DuraFET sensor, and identical in design to the suite of sensors in use at the Washington Department of Natural Resources for nearshore monitoring. The sensors were each deployed in individual pvc pipes with large cutouts at the bottom to allow free water flow around the sensor head. The pipes are affixed to a single piling in the bayview channel which drains extensive eelgrass beds. Flow is generally vigorous in the channel and sensors were deployed about 1 meter above the bottom. The pH varies by as much as a full pH unit across a few hours under certain conditions at this location, providing a wide range across which to compare the sensors. The relative performance of these three sensors will be of interest to practitioners wishing to assess data collected with similar sensors across different environments.
Session Title
Ocean Acidification in the Salish Sea
Conference Track
Climate Change and Ocean Acidification
Conference Name
Salish Sea Ecosystem Conference (2016 : Vancouver, B.C.)
Document Type
Event
Start Date
2016 12:00 AM
End Date
2016 12:00 AM
Location
2016SSEC
Type of Presentation
Oral
Genre/Form
conference proceedings; presentations (communicative events)
Contributing Repository
Digital content made available by University Archives, Heritage Resources, Western Libraries, Western Washington University.
Subjects – Topical (LCSH)
Hydrogen--Washington (State)--Padilla Bay; Chemical detectors--Washington (State)--Padilla Bay
Geographic Coverage
Padilla Bay (Wash.); Salish Sea (B.C. and Wash.)
Rights
This resource is displayed for educational purposes only and may be subject to U.S. and international copyright laws. For more information about rights or obtaining copies of this resource, please contact University Archives, Heritage Resources, Western Libraries, Western Washington University, Bellingham, WA 98225-9103, USA (360-650-7534; heritage.resources@wwu.edu) and refer to the collection name and identifier. Any materials cited must be attributed to the Salish Sea Ecosystem Conference Records, University Archives, Heritage Resources, Western Libraries, Western Washington University.
Type
Text
Language
English
Format
application/pdf
Comparison of three pH sensors co-deployed in a high variability environment
2016SSEC
Three pH sensors were deployed in a channel in Padilla Bay for several multiple week deployments both in winter and summer seasons. One sensor (a YSI EXO sonde) is part of the long term monitoring of the Padilla Bay National Estuarine Research Reserve. The second sensor is a Satlantic SeaFET, and is part of the Washington Ocean Acidification Center’s monitoring effort. The third sensor is a custom built sensor based on the DuraFET sensor, and identical in design to the suite of sensors in use at the Washington Department of Natural Resources for nearshore monitoring. The sensors were each deployed in individual pvc pipes with large cutouts at the bottom to allow free water flow around the sensor head. The pipes are affixed to a single piling in the bayview channel which drains extensive eelgrass beds. Flow is generally vigorous in the channel and sensors were deployed about 1 meter above the bottom. The pH varies by as much as a full pH unit across a few hours under certain conditions at this location, providing a wide range across which to compare the sensors. The relative performance of these three sensors will be of interest to practitioners wishing to assess data collected with similar sensors across different environments.
