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Analyzed Two-band IR data

Main Topic

Typical

Exceptions

Complications

Geostationary

North Pacific

Subtopic

Analyzed Two-band IR data

The examples below give some results of analysis of two band IR data for eruptions of the past two decades.

Typical Cases

• El Chichon: April 4, 1982

• Klyuchevskoi: October 1, 1994

Exceptions to the Rules

Positive Volcanic Clouds

• Opaque Volcanic Clouds

• Ice/Water Coatings on Ash

• "Warm" cloud over "cold" background

Negative Meterological Clouds

"Warm" cloud over "cold" background

Complications

Volcanic Cloud with little or no ash

Hekla, Feb 26, 2000

Inhomogeneous Background

Mt. Spurr: September 19, 1992

Geostationary Satellite Examples

• GOES-8: Popocatepetl, Mexico

• GMS-5: Ruapehu, New Zealand

North Pacific Eruption Examples

• Augustine, Alaska: 1986

• Redoubt, Alaska: 1989-90

• Crater Peak/Spurr, Alaska: 1992

• Klyuchevskoi, Russia: 1994

| Michigan Tech Home | Department of Geological Engineering & Sciences | Remote Sensing Institute | MTU Volcanoes Page | Volcanic Clouds Web Site | Total Ozone Mapping Spectrometer (TOMS) | Volcanic Ash Advisory Centers (VAAC) | Smithsonian Institution | Alaska Volcano Observatory |