Special Event Imagery Special Event Imagery
2010 - NewZealand
Special Event Imagery Special Event Imagery
OSEI volcano products include multichannel color composite imagery showing ash clouds (VSH), hotspots from lava flow (VIR) or both (VOL). We also create grayscale "split-window" images which use a channel differencing technique that enhances the appearance of ash clouds in imagery (DIF). This technique is oftenuseful for distinguishing ash clouds from water vapor clouds.

The Washington Volcanic Ash Advisory Center has real time satellite imagery and derived advisory products at:

File Types

Type
Description
S
An OSEI "Standard"-format image saved at full resolution and at high image quality. Resultant file sizes are generally at or above 500K and sometimes exceed 1M. Dimensions vary by image but are generally at least 1024X1024.
P
An OSEI "Preview"-format image is reduced dimensionally before saving. These files function as thumbnails that allow the user to determine their interest in an event before downloading the standard version of the product. File sizes are generally around 60K.
M
OSEI AVI-format or MPG-format animations whose file sizes depend on the length and dimensions of the loop. File sizes exceeding 1M are common.

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Archives Available:  1996   
National Oceanic and Atmoshperic Administration

Type
Filename
Size
Date

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