K7LWA_2018-01-11_Hummers
Broad-billed Hummingbird
Costa's Hummingbird
posted by LW [K7LWA] @ 11:34
K7LWA's Amateur Radio Blog
-- LW Abel [K7LWA] Blog --
Thursday, January 11, 2018
Tuesday, August 29, 2017
Stromatolites & Ripple/Mud Patterns In Precambrian Rocks (Belt Supergroup)
| Stromatolites & Ripple/Mud Patterns In Precambrian Rocks (Belt Supergroup) Along Idaho Route 2 Age ~ 1,000 mya (1 Billion years old) (August 26, 2017) Stromatolites         Ripple Patterns & Dried Mud     (photos by KF7TBA & K7LWA) |
Posted by K7LWA's BLOG at 08-29-2017 12:00PT
posted by LW [K7LWA] @ 12:00
Monday, March 13, 2017
Capetown rocks find a temporary home (Mar 13, 2017)
Collected by a friend
Specimen of remelted quartz, red garnet, and olivine (green).
posted by LW [K7LWA] @ 23:21
Friday, January 13, 2017
lThursday, January 12, 2017
Sunday, January 1, 2017
Shelley [KF7TBA]'s 2m Yagi (6dB)
Shelley [KF7TBA]'s 2m Yagi (6dB)
QST (above) -- LW [K7LWA]'s modified specs (below)
Mounted on roof (on axis)
posted by LW [K7LWA] @ 00:00
Friday, July 18, 2014
[CATALOG-VH] PNW Volcano Hazards Resources -- WEB
[Updated: 2014-07-18]
Web Links:
Browse Earthquake Topics — History-Earthquakes, Seismology (USGS) -- a good starting point
YouTube videos:
The Eruption of the Nevado del Ruiz Volcano - Colombia 1985
[15:02]: This tragedy is credited with alerting USGS (et. al.) to the potential PNW Volcano Hazards!
The
production relates the health effects of the disaster that buried the
city of Armero in November of 1985. This 18-minute video was produced
for health professionals who may find themselves involved in mass
casualty management, triage, and other aspects of disaster management.
Mt. Rainier still poses threat, County unveils new active volcano website by Pierce County Television
[02:54] Recent report by a very active Pierce County PubTV & EOC.
Published
on May 29, 2014 Mt.
Rainier is an active volcano and Pierce County encourages people to
always be prepared.
Huge rockfall on Mount Rainier
[02:48] Very good clip of a rockfall -- check out the flow speed.
Mount Rainier, WA
2011.06.25. ~1602
Smaller and larger rockfalls happened during the day about hourly. Around 4pm a huge part of Nisqually Cleaver fell down, creating a fast river of rock and snow.
It was the biggest that day
Smaller and larger rockfalls happened during the day about hourly. Around 4pm a huge part of Nisqually Cleaver fell down, creating a fast river of rock and snow.
It was the biggest that day
Lahar in Semeru (2003)
[01:02] How fast can you run?
Lahar filmed in 2003 in the
Curah Lengkong, valley on the sud-east of Semeru (8-9 kms from the top)
| © Franck Lavigne (University La Sorbonne)
Lahar-Mt. Rainier
[04:01] Very good antimated simulation of the Lahar Hazards at MORA
This movie shows a
physics-based computer simulation of a lahar running down Mt. Rainier,
Washington State. Lahars pose a serious natural hazard to populations
surrounding volcanoes. Towns around Mt. Rainier can be struck by lahars
within 20 minutes of their formation on the mountain's upper slopes.
Simulations like these help map out potential lahar paths and aid in
planning.
For more natural hazard information visit http://es.ucsc.edu/~ward.
For more natural hazard information visit http://es.ucsc.edu/~ward.
Mount Rainier Volcano is a Ticking Time Bomb
[44:44] Except for the really, really cheesy opening of showing Mt Saint Helens (MSH) 1980 eruption in reverse-motion, this is a very good overview of what's up with Mt Rainier (MORA).
Mount Rainier is a ticking time bomb that could dwarf the 1980 eruption
of Mount St. Helens, sending massive lahars and mudslides toward the
Seattle-Tacoma metropolitan area.
The most recent recorded volcanic eruption was between 1820 and 1854, but many eyewitnesses reported eruptive activity in 1858, 1870, 1879, 1882 and 1894 as well.
Although Mount Rainier is an active volcano, as of 2010 there was no evidence of an imminent eruption. However, an eruption could be devastating for all areas surrounding the volcano. Mount Rainier is currently listed as a Decade Volcano, or one of the 16 volcanoes with the greatest likelihood of causing great loss of life and property if eruptive activity resumes. If Mt. Rainier were to erupt as powerfully as Mount St. Helens did in its May 18, 1980, eruption, the effect would be cumulatively greater, because of the far more massive amounts of glacial ice locked on the volcano compared to Mount St. Helens and the vastly more heavily populated areas surrounding Rainier. Lahars from Rainier pose the most risk to life and property, as many communities lie atop older lahar deposits. According to USGS, about 150,000 people live on top of old lahar deposits of Rainier. Not only is there much ice atop the volcano, the volcano is also slowly being weakened by hydrothermal activity. According to Geoff Clayton, a geologist with a Washington State Geology firm, RH2 Engineering, a repeat of the Osceola mudflow would destroy Enumclaw, Orting, Kent, Auburn, Puyallup, Sumner and all of Renton. Such a mudflow might also reach down the Duwamish estuary and destroy parts of downtown Seattle, and cause tsunamis in Puget Sound and Lake Washington. Another Cascade Arc volcano with similar hazards is Mount Meager in southwestern British Columbia, Canada, which has produced several large landslides in the past 8,000 years, as well as an eruption 2,350 years ago that was similar in size to Mount St. Helens' 1980 eruption. Rainier is also capable of producing pyroclastic flows and expelling lava.
According to K. Scott, a scientist with the USGS: "A home built in any of the probabilistically defined inundation areas on the new maps is more likely to be damaged or destroyed by a lahar than by fire...For example, a home built in an area that would be inundated every 100 years, on the average, is 27 times more likely to be damaged or destroyed by a flow than by fire. People know the danger of fire, so they buy fire insurance and they have smoke alarms, but most people are not aware of the risks of lahars, and few have applicable flood insurance."
The volcanic risk is somewhat mitigated by lahar warning sirens and escape route signs in Pierce County. The more populous King County is also in the Lahar area, but currently has no zoning restrictions due to volcanic hazard. More recently (since 2001) funding from the federal government for lahar protection in the area has dried up, leading local authorities in at-risk cities like Orting to fear a disaster similar to the Armero tragedy.
The most recent recorded volcanic eruption was between 1820 and 1854, but many eyewitnesses reported eruptive activity in 1858, 1870, 1879, 1882 and 1894 as well.
Although Mount Rainier is an active volcano, as of 2010 there was no evidence of an imminent eruption. However, an eruption could be devastating for all areas surrounding the volcano. Mount Rainier is currently listed as a Decade Volcano, or one of the 16 volcanoes with the greatest likelihood of causing great loss of life and property if eruptive activity resumes. If Mt. Rainier were to erupt as powerfully as Mount St. Helens did in its May 18, 1980, eruption, the effect would be cumulatively greater, because of the far more massive amounts of glacial ice locked on the volcano compared to Mount St. Helens and the vastly more heavily populated areas surrounding Rainier. Lahars from Rainier pose the most risk to life and property, as many communities lie atop older lahar deposits. According to USGS, about 150,000 people live on top of old lahar deposits of Rainier. Not only is there much ice atop the volcano, the volcano is also slowly being weakened by hydrothermal activity. According to Geoff Clayton, a geologist with a Washington State Geology firm, RH2 Engineering, a repeat of the Osceola mudflow would destroy Enumclaw, Orting, Kent, Auburn, Puyallup, Sumner and all of Renton. Such a mudflow might also reach down the Duwamish estuary and destroy parts of downtown Seattle, and cause tsunamis in Puget Sound and Lake Washington. Another Cascade Arc volcano with similar hazards is Mount Meager in southwestern British Columbia, Canada, which has produced several large landslides in the past 8,000 years, as well as an eruption 2,350 years ago that was similar in size to Mount St. Helens' 1980 eruption. Rainier is also capable of producing pyroclastic flows and expelling lava.
According to K. Scott, a scientist with the USGS: "A home built in any of the probabilistically defined inundation areas on the new maps is more likely to be damaged or destroyed by a lahar than by fire...For example, a home built in an area that would be inundated every 100 years, on the average, is 27 times more likely to be damaged or destroyed by a flow than by fire. People know the danger of fire, so they buy fire insurance and they have smoke alarms, but most people are not aware of the risks of lahars, and few have applicable flood insurance."
The volcanic risk is somewhat mitigated by lahar warning sirens and escape route signs in Pierce County. The more populous King County is also in the Lahar area, but currently has no zoning restrictions due to volcanic hazard. More recently (since 2001) funding from the federal government for lahar protection in the area has dried up, leading local authorities in at-risk cities like Orting to fear a disaster similar to the Armero tragedy.
Southwestern Oregon Community College Geology Lecture Series.
A great series of public geology talks.
Preparing for the Next Eruption in the Cascades
[1:08:39] This is the USGS expert who taught the Living with a Volcano in your Backyard Workshop that I attended at MORA in 2012.
Part of
the Geology Lecture Series presented on March 5, 2011.
Dr. Carolyn L. Driedger Hydrologist/Outreach Coordinator United States Geology Survey, Cascade Volcano Observatory
Dr. Carolyn L. Driedger Hydrologist/Outreach Coordinator United States Geology Survey, Cascade Volcano Observatory
Carolyn's presentation at the CommAcademy's 2012 conference:
28_Preparing-for-Future-Eruptions-
Mt-Saint-Helens_Driedger.pdf
28_Preparing-for-Future-Eruptions- Mt-Saint-Helens_Driedger.ppt
28_Preparing-for-Future-Eruptions- Mt-Saint-Helens_Driedger.ppt
Central Rocks Interview - Tom Sisson (View this part first)
Central Washington University (CWU) has a lot of good geology videos & PubTV shows hosted by Nick Zentner.
[32:19] Nick's half-hour interview with Tom Sission (USGS) on Central Rocks
Natural Science - Mount Rainier (Tom Sisson USGS)
[53:57] This video is of Tom Sission (USGS) talking about the natural history of the Cascades and the hazards at MORA.
Tom Sission of the U.S.
Geological Survey talks in depth about Mount Rainier in Washington
State.
Other related videos:
Nick's Mount Rainier: Downtown Geology Lecture Series [1:05:21] -- a good overview of plate tectonics, Cascade (Old & New), MORA.
Volcanoes in our Backyard: Hazards, Risks, and What We Can Do -- Seth Moran (USGS)
[1:16:39] Another very good overview of the PNW Volcano Hazards we should know about.
USGS Seismologist Seth Moran, public talk at OMSI Science Pub (link
below), Bagdad Theater, Portland OR, July 9, 2012.
Oregon and Washington are home to literally hundreds of volcanoes. They provide stunning landscapes, wonderful places to hike, some of the best skiing in the West coast, and continual naming inspiration for high-quality locally-produced beers.
However, a small percentage also have the potential to erupt in our lifetimes, and because human population is increasing and moving to locales that are ever closer to these volcanoes, such eruptions have increasing potential to cause casualties, significant infrastructure damage, and major economic losses.
In this talk, Seth Moran will discuss the hazards and risks associated with Cascade volcanoes, illustrated with examples from volcanoes around the world, and will also present the monitoring and research efforts that the U.S. Geological Survey and its partners are presently engaged in to help mitigate these risks.
Seth Moran, PhD, is a volcano seismologist who has been working with volcanoes for almost 25 years, although he's been a volcano nerd since first grade. He began his volcano seismology career in 1988 as a graduate student at the University of Washington, where he studied Mount St. Helens and Mount Rainier.
In 1997 he moved to Anchorage to take a job as research scientist at the U.S. Geological Survey's Alaska Volcano Observatory, and in 2003 he moved to his present job as research scientist and resident seismologist at the USGS Cascades Volcano Observatory in Vancouver, WA
Edited by Jenda Johnson for IRIS
Videography by Jenda Johnson and Robert Butler
Sound Engineer Justin Andrew
Oregon and Washington are home to literally hundreds of volcanoes. They provide stunning landscapes, wonderful places to hike, some of the best skiing in the West coast, and continual naming inspiration for high-quality locally-produced beers.
However, a small percentage also have the potential to erupt in our lifetimes, and because human population is increasing and moving to locales that are ever closer to these volcanoes, such eruptions have increasing potential to cause casualties, significant infrastructure damage, and major economic losses.
In this talk, Seth Moran will discuss the hazards and risks associated with Cascade volcanoes, illustrated with examples from volcanoes around the world, and will also present the monitoring and research efforts that the U.S. Geological Survey and its partners are presently engaged in to help mitigate these risks.
Seth Moran, PhD, is a volcano seismologist who has been working with volcanoes for almost 25 years, although he's been a volcano nerd since first grade. He began his volcano seismology career in 1988 as a graduate student at the University of Washington, where he studied Mount St. Helens and Mount Rainier.
In 1997 he moved to Anchorage to take a job as research scientist at the U.S. Geological Survey's Alaska Volcano Observatory, and in 2003 he moved to his present job as research scientist and resident seismologist at the USGS Cascades Volcano Observatory in Vancouver, WA
Edited by Jenda Johnson for IRIS
Videography by Jenda Johnson and Robert Butler
Sound Engineer Justin Andrew
- 30 -
posted by LW [K7LWA] @ 12:00
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- Stromatolites & Ripple/Mud Patterns In Precambrian...
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