Index Catalog // ScholarsArchive@OSU

Introducing the OPEnS HUB 2.0 - A Versatile, In situ, Remote, Sensor Hub

Creator:: DeBell, Thomas C., Goertzen, Luke, Selker, John, and Udell, Chet
Abstract:: Research in geoscience often requires transmission of significant amounts of data from remote locations. The emergence of microcontrollers and open-source sensors are allowing connectivity to affordable, distributed in-situ monitoring. This report describes the OPEnS Hub, a modular data hub orders of magnitude cheaper than commercial dataloggers when scaled to multiple...
Resource Type:: Poster

Practical considerations for enhanced-resolution coil-wrapped distributed temperature sensing

Creator:: Hilgersom, Koen, van Emmerik, Tim, Solcerova, Anna, Berghuijs, Wouter, Selker, John, and van de Giesen, Nick
Abstract:: Fibre optic distributed temperature sensing (DTS) is widely applied in Earth sciences. Many applications require a spatial resolution higher than that provided by the DTS instrument. Measurements at these higher resolutions can be achieved with a fibre optic cable helically wrapped on a cylinder. The effect of the probe construction,...
Resource Type:: Article

High-resolution wind speed measurements using actively heated fiber optics

Creator:: Sayde, Chadi, Thomas, Christoph K., Wagner, James, and Selker, John
Abstract:: We present a novel technique to simultaneously measure wind speed (U) at thousands of locations continuously in time based on measurement of velocity-dependent heat transfer from a heated surface. Measuring temperature differences between paired passive and actively heated fiber-optic (AHFO) cables with a distributed temperature sensing system allowed estimation of...
Resource Type:: Article

Monitoring of Soil Moisture: Methods, Improving Wine Quality and Extent of Wetting

Creator:: Selker, John, Candolfi-Vasconcelos, M. Carmo, and Rojas, Wilson
Abstract:: The Willamette valley has grown to be an important source of high quality grapes for the production of wine. These grapes are a very high value crop that has proven to be profitable in this region. Irrigation of this crop has been limited largely to the establishment stage, with most...
Resource Type:: Technical Report

An engineers approach to irrigation management in Oregon Pinot noir

Creator:: Selker, John and Baer, Emilie
Abstract:: Vineyard managers must decide on the timing and amount of irrigation. In Oregon the need for irrigation differs greatly year to year and field to field based on micro climate, soil, root development, plant health, and root stock. We suggest the use of leaf water potential as a useful management...
Resource Type:: Technical Report

Correcting artifacts in transition to a wound optic fiber: Example from high-resolution temperature profiling in the Dead Sea

Creator:: Arnon, Ali, Selker, John, and Lensky, Nadav
Abstract:: Spatial resolution fiber-optic cables allow for detailed observation of thermally complex heterogeneous hydrologic systems. A commercially produced high spatial resolution helically wound optic fiber sensing cable is employed in the Dead Sea, in order to study the dynamics of thermal stratification of the hypersaline lake. Structured spatial artifacts were found...
Resource Type:: Article

Taking the Temperature of Ecological Systems With Fiber Optics

Creator:: Selker, John
Abstract:: No abstract available.
Resource Type:: Article

Hydrologic Measurement Facility Conducts User Survey

Creator:: Selker, John
Abstract:: No abstract available.
Resource Type:: Article

A two-color twist on test taking

Creator:: Selker, John
Abstract:: Test taking is a humiliating experience for many students, with no perceived direct educational benefit. That need not be so. When circumstances allow, I use a two-pen method of collaborative testing. Students have told me that they leave the exam having figured out what they didn’t understand, filled in the...
Resource Type:: Article

Survey Provides Guidance for Consortium's Hydrologic Measurement Facility

Creator:: Robinson, David, Selker, John, Bowden, Breck, Duncan, John, Durant, John, Hooper, Rick, Jacobs, Jennifer, and Knight, Rosemary
Abstract:: The Consortium of Universities for the Advancement of Hydrologic Sciences, Inc. (CUAHSI) began the Hydrologic Measurement Facility (HMF) program in June 2005 to advance hydrologic measurement capability within the research community. To provide guidance for this effort, a recent survey assessed the level of need among the hydrological sciences community...
Resource Type:: Article

ScholarsArchive@OSU

Introducing the OPEnS HUB 2.0 - A Versatile, In situ, Remote, Sensor Hub

Practical considerations for enhanced-resolution coil-wrapped distributed temperature sensing

High-resolution wind speed measurements using actively heated fiber optics

Monitoring of Soil Moisture: Methods, Improving Wine Quality and Extent of Wetting

An engineers approach to irrigation management in Oregon Pinot noir

Correcting artifacts in transition to a wound optic fiber: Example from high-resolution temperature profiling in the Dead Sea

Taking the Temperature of Ecological Systems With Fiber Optics

Hydrologic Measurement Facility Conducts User Survey

A two-color twist on test taking

Survey Provides Guidance for Consortium's Hydrologic Measurement Facility

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