The Development of a Low-Cost, Near Infrared, High-Temperature Thermal Imaging System and Its Application to the Retrieval of Accurate Lava Lake Temperatures at Masaya Volcano, Nicaragua
| Autor: | Andrew J. S. McGonigle, Tom D. Pering, Thomas C. Wilkes, Rebecca Anne England, Jon R. Willmott, Leigh Russell Stanger |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
010504 meteorology & atmospheric sciences
Lava Infrared Science Raspberry Pi near infrared 010502 geochemistry & geophysics 01 natural sciences Raspberry pi Thermal thermal imaging low-cost sensor lava lake Masaya volcano Calibration Radiative transfer 0105 earth and related environmental sciences Remote sensing geography geography.geographical_feature_category Near-infrared spectroscopy Volcano General Earth and Planetary Sciences Environmental science |
| Zdroj: | Remote Sensing, Vol 10, Iss 3, p 450 (2018) Remote Sensing; Volume 10; Issue 3; Pages: 450 |
| ISSN: | 2072-4292 |
| Popis: | Near infrared thermal cameras can provide useful low-cost imaging systems for high temperature applications, as an alternative to ubiquitous mid-/long-wavelength infrared systems. Here, we present a new Raspberry Pi-based near infrared thermal camera for use at temperatures of ≈>500 °C. We discuss in detail the building of the optical system, calibration using a Sakuma-Hattori model and quantification of uncertainties in remote temperature retrievals. We then present results from the deployment of the system on Masaya Volcano, Nicaragua, where the active lava lake was imaged. Temperatures reached a maximum of 1104 ± 14 °C and the lake radiative power output was found to range between 30 and 45 MW. To the best of our knowledge, this is the first published ground-based data on the thermal characteristics of this relatively nascent lava lake, which became visible in late 2015. |
| Databáze: | OpenAIRE |
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