adapting ptwc’s real-time tsunami travel time display for science on a sphere
DESCRIPTION
Adapting PTWC’s Real-Time Tsunami Travel Time Display for Science on a Sphere. Nathan Becker Pacific Tsunami Warning Center SOS Users Collaborative Network Workshop 31 July 2008. PTWC’s Mission. - PowerPoint PPT PresentationTRANSCRIPT
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Adapting PTWC’s Real-TimeAdapting PTWC’s Real-TimeTsunami Travel Time DisplayTsunami Travel Time Display
for Science on a Spherefor Science on a Sphere
Nathan BeckerNathan Becker
Pacific Tsunami Warning CenterPacific Tsunami Warning Center
SOS Users Collaborative Network WorkshopSOS Users Collaborative Network Workshop
31 July 200831 July 2008
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PTWC’s MissionPTWC’s Mission
Provide warnings of tsunamis to the public and to Provide warnings of tsunamis to the public and to organizations responsible for public safety in coastal organizations responsible for public safety in coastal areas of the Pacific Ocean, Indian Ocean (since 2005) areas of the Pacific Ocean, Indian Ocean (since 2005) and the Caribbean Sea (since 2006) and the Caribbean Sea (since 2006)
Rapidly detect phenomena that cause tsunamis and Rapidly detect phenomena that cause tsunamis and assess their tsunami potentialassess their tsunami potential
Detect and monitor tsunamis when they occur, predict Detect and monitor tsunamis when they occur, predict when they will arrive at affected coastlines, and when they will arrive at affected coastlines, and continue to provide updated information about continue to provide updated information about tsunamis throughout their durationtsunamis throughout their duration
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PTWC Operations RoomPTWC Operations Room
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How It WorksHow It Works
C-shell scripts running under Red Hat Linux making C-shell scripts running under Red Hat Linux making calls to off-the-shelf open-source software packages:calls to off-the-shelf open-source software packages:• Generic Mapping Tools (GMT v.4)Generic Mapping Tools (GMT v.4)
• Tsunami Travel Time (TTT v.3, from Geoware)Tsunami Travel Time (TTT v.3, from Geoware)– shallow-water wave approximation with a Huygens construction methodshallow-water wave approximation with a Huygens construction method
• XPlanetXPlanet
• ImageMagickImageMagick
• espeak with MBROLA for text-to-speech synthesisespeak with MBROLA for text-to-speech synthesis
Images displayed by “slide-show” software:Images displayed by “slide-show” software:• ScreensaverScreensaver
• SOS slideshow displaySOS slideshow display
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Hypocenter MapHypocenter Map
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Regional Tsunami Travel TimeRegional Tsunami Travel Time
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Global Tsunami Travel Time MapGlobal Tsunami Travel Time Map
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TTT Map + 1 HourTTT Map + 1 Hour
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TTT Map + 2 HoursTTT Map + 2 Hours
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TTT Map + 3 Hours TTT Map + 3 Hours
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TTT Map + 4 HoursTTT Map + 4 Hours
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TTT Map + 5 HoursTTT Map + 5 Hours
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TTT AnimationsTTT Animationson the Sphereon the Sphere
Historical Tsunamis:Historical Tsunamis:• Aleutians, Alaska, April 1, 1946Aleutians, Alaska, April 1, 1946
• Chile, May 22, 1960Chile, May 22, 1960
• Indonesia, December 26, 2004Indonesia, December 26, 2004