Tag Archives: Volcano Watch

Volcano Watch: Reminders to be prepared for nature’s fury


Hawaii News Digest, 15 October 2017, 1545 UTC, Post #15777.

Source:

http://www.hawaiitribune-herald.com/news/features/volcano-watch-reminders-be-prepared-nature-s-fury

Accessed on 15 October 2017, 1545 UTC.

Please click link to read the full story.

Comment:

This article provides a look at earthquakes and what can be done to mitigate their damage.  The scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory review the damaging earthquakes over the past few months in Mexico and in other areas and outline what must be done to prepare for these unexpected events.

The article ends with an analysis of current volcanic activity on Hawaii Island:

“This past week, Kilauea Volcano’s summit lava lake level fluctuated with summit inflation and deflation, ranging about 32-39 m (105-128 ft) below the vent rim. On the East Rift Zone, the 61g flow remained active, with lava entering the ocean near Kamokuna and surface breakouts downslope of Pu‘u ‘O‘o. The 61g flows do not pose an immediate threat to nearby communities.”

“Mauna Loa is not erupting. Rates of deformation and seismicity did not change significantly during the past week, but persist above long-term background levels. Small-magnitude earthquakes occurred beneath the summit caldera and upper Southwest Rift Zone, primarily at depths less than 5 km (3 mi), with some deeper events at depths of 5-13 km (3-8 mi). GPS measurements continue to show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone. No significant changes in volcanic gas emissions were measured.”

“No earthquakes were reported felt on the Island of Hawaii during the past week.”

For the latest State of Hawaii, Hawaii Island, and local sports news, please check the blog sidebars.  These news feeds are updated daily.

Opinions expressed in this blog are mine unless otherwise stated.

Thanks for joining us today.

Until next time,

Russ Roberts

Hawaii News Digest

https://prgnewshawaii.wordpress.com

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Volcano Watch: Thermal maps help with the pahoehoe challenge


Hawaii News Digest, 24 September 2017, 1600 UTC, Post #15650.

Source:

http://www.hawaiitribune-herald.com/news/community/volcano-watch-thermal-maps-help-pahoehoe-challenge

Accessed on 24 September 2017, 1600 UTC.

Please click link to read the full story.

Comment:

This edition of “Volcano Watch” addresses the issue of pahoehoe lava flows and what can be done to better monitor their development and flow patterns.

Over the past 34 years, pahoehoe lava from the Kilauea Volcano and the Pu’u O’u eruption have covered much of Kalapana, endangered Pahoa town, and buried most of the Royal Gardens subdivision.

Pahoehoe lava flows are difficult to monitor and predict.  Scientists at the Hawaiian Volcano Observatory (HVO) have developed ways to use thermal mapping to predict the course of these dangerous lava flow which can destroy homes and local forests.

This installment of “Volcano Watch” describes one technique that enables better monitoring of these lava flows:

“During our routine helicopter overflights, we use a hand-held thermal camera to collect a series of overlapping, oblique images along the entire length of the lava flow, from the vent to the ocean entry. We then use “structure-from-motion” computer software to stitch the individual images into a large mosaic.”

“This type of software uses the overlapping images to calculate the exact three-dimensional position of each image pixel on the surface of the Earth. We insert a handful of known coordinates in the image mosaic as “ground control” points, which provide “georeference” for the mosaic and orients it to its correct position on the Earth’s surface.”

“This mosaic of thermal images is basically a thermal map of the lava flow surface, and it reveals the exact location of all the active surface breakouts. The map provides a highly accurate picture of surface activity, improving our ability to anticipate where lava might advance. The added benefit is that we can precisely map the path of the main lava tube, which produces a subtle line of warm temperatures on the surface.”

While we may not be able to stop these destructive lava flows, scientists now have tools, such as thermal mapping, to predict where these flows may go, thus increasing public awareness and community safety.

For the latest State of Hawaii, Hawaii Island, and local sports news, please check the blog sidebars.  These news feeds are updated daily.

Opinions expressed in this blog are mine unless otherwise stated.

Thanks for joining us today.

Until next time,

Russ Roberts

Hawaii News Digest

https://prgnewshawaii.wordpress.com

Volcano Watch: Mauna Loa update–unrest continues, but outcome is uncertain


Hawaii News Digest, 17 September 2017, 1530 UTC.

Source:

http://www.hawaiitribune-herald.com/news/community/volcano-watch-mauna-loa-update-unrest-continues-outcome-uncertain

Accessed on 17 September 2017, 1530 UTC.

Please click link to read the full story.

Comment:

Over the past two years, scientists at the USGS Hawaiian Volcano Observatory have been keeping a close watch on the rates of “inflation and seismicity” at the Mauna Loa Volcano.  The patterns have waxed and waned “but have remained above what we consider long-term levels.”

Whether these patterns reflect past trends which ended in eruptions is unknown.  Geologists at the Hawaiian Volcano Observatory are asking residents to be aware of potential problems that could be caused by a future eruption of Mauna Loa:

“We cannot discount the possibility that Mauna Loa will move from current conditions to eruption more quickly than it did in 1975 and 1984, potentially with only days to weeks of sharply increased activity.”

“It also remains possible that the current unrest will gradually cease without the volcano erupting, as it did during periods of unrest in 2002 and 2004. And so, we must continue to live with uncertainty about the timing and details of Mauna Loa’s next eruption.”

“In the meantime, HVO is closely monitoring the volcano and working with partner agencies and communities to prepare for a future eruption response. We also are identifying the key scientific questions we would seek to answer in the next eruption.”

“Since 1984, HVO has upgraded and added monitoring instrumentation, developing alarm systems to rapidly notify us of changes that might indicate a Mauna Loa eruption is imminent or in progress. We’ve also created map tools and other products to assist authorities and the public during the volcano’s next eruption.”

“Getting back to the question of should residents relax or stay vigilant, the answer is be prepared. Develop a family emergency plan and review emergency supplies. Know where you live and work with respect to Mauna Loa hazard zones.”

“More information about readying our island community for whatever Mauna Loa has in store for us can be found at https://volcanoes.usgs.gov/vhp/preparedness.html.”

Keeping informed is the best way to stay prepared for any future volcanic activity on Hawaii Island.  The website provided by HVO is a good guide to what can be expected if and when Mauna Loa erupts.

For the latest State of Hawaii, Hawaii Island, and local sports news, please check the blog sidebars.  These news feeds are updated daily.

Opinions expressed in this blog are mine unless otherwise stated.

Thanks for joining us today.

Until next time,

Russ Roberts

Hawaii News Digest

https://prgnewshawaii.wordpress. com

Volcano Watch: Tephra deposit names-out with the old, in with the new


Hawaii News Digest, 03 September 2017, 1530 hrs, UTC, Post #15534.

Source:

http://www.hawaiitribune-herald.com/news/community-news/volcano-watch-tephra-deposit-names-out-old-new

Accessed on 03 September 2017, 1530 hrs, UTC.

Please click link to read the full story.

Comment:

This edition of Volcano Watch discusses how geologists name “notable” volcanic deposits such as formations. Sometimes, if there is no name, geologists will give the formation a name, usually descriptive of the volcano that formed the area.

Such is the case with the mixture of  features called the Keanakako’i Tephra.  A UH-Manoa professor and a USGS Hawaiian Volcano Observatory geologist came up with a nomenclature that is “simple and reflects the various processes that formed the different processes.”

While the 12-unit classification isn’t fancy and doesn’t recall any specific geological area, it does simply classification and can be used by both professional staff and volunteers who monitor volcanic eruptions:

“Instead, they opted for a nomenclature that instantly allows a beginner to tell which of two units is the older. The units range from A to L, in order of decreasing age. Unit A was erupted in about 1500 and the four subdivisions of unit L (themselves in temporal order, L1 to L4) in the early 1800s. Letters, rather than numbers, were used to avoid confusion with an earlier numbered nomenclature that never really took off.”

“There’s been predictable pushback. The new terms lack color, are too hard to remember and too disruptive to old thinking, are not descriptive (as if “mystery unit” or “unit H” is descriptive!). But c’est la vie, that’s life. We think, once the shock wears off, the new nomenclature will make things easier for future researchers.”

For the latest State of Hawaii, Hawaii Island, and local sports news, please check the blog sidebars.  These news feeds are updated daily.

Opinions expressed in this blog are mine unless otherwise stated.

Thanks for joining us today.

Until next time,

Russ Roberts

Hawaii News Digest

https://prgnewshawaii.wordpress.com

Volcano Watch: The ongoing Pu’u O’o eruption is full of anniversaries


Hawaii News Digest, 19 August 2017, 15:15 hrs, UTC, Post #15439.

Source:

http://www.westhawaiitoday.com/news/volcano-update/volcano-watch-ongoing-puu-oo-eruption-full-anniversaries

Accessed on 19 August 2017, 15:15 hrs, UTC.

Please click link to read the full report.

Comment:

The ongoing Pu’u O’o rift zone eruption on the Kilauea Volcano is now approaching its 35th anniversary–‘the longest-loved and most voluminous rift zone eruption of the Kilauea Volcano in more than 500 years.”  The 61g lava flow has covered 6.8 miles/11 kilometers in the past two months.

Here’s the current status of volcanic activity in the Kilauea area:

“This past week, Kilauea Volcano’s summit lava lake level varied 92-144 feet below the vent rim, with fluctuations in concert with summit inflation and deflation. On the East Rift Zone, the 61g flow remained active, with lava entering the ocean near Kamokuna and surface breakouts downslope of Puu Oo. The 61g flows do not pose an immediate threat to nearby communities.”

“Mauna Loa is not erupting. During the past week, small-magnitude earthquakes continued to occur beneath the volcano, primarily in the upper Southwest Rift Zone, at depths less than 3 miles. GPS measurements continue to show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone. No significant changes in volcanic gas emissions were measured.”

“One earthquake with three or more felt reports in the Hawaiian islands occurred during the past week. At 5:24 a.m. on Aug. 16, a magnitude-3.1 earthquake occurred 6.2 miles east-northeast of Honokaa at a depth of 9 miles.”

“Visit www.volcanoes.usgs.gov/hvo for past Volcano Watch articles, Kilauea daily eruption updates, Mauna Loa weekly updates, volcano photos, recent earthquakes info, and more. Call for summary updates at 967-8862 (Kilauea) or 967-8866 (Mauna Loa). Email questions to askHVO@usgs.gov.”

For the latest State of Hawaii, Hawaii Island, and local sports news, please check the blog sidebars.  These news feeds are updated daily.

Opinions expressed in this blog are mine unless otherwise stated.

Thanks for joining us today.

Until next time,

Russ Roberts

Hawaii News Digest

https://prgnewshawaii.wordpress.com

Volcano Watch: Kilauea activity update for October 13, 2016 | Hawaii 24/7


Kīlauea continues to erupt at its summit and East Rift Zone. This past week, the summit lava lake level raised in concert with summit inflation.

Source: Volcano Watch: Kilauea activity update for October 13, 2016 | Hawaii 24/7 (http://www.hawaii247.com/2016/10/13/volcano-watch-kilauea-activity-update-for-october-13-2016/).

Accessed on 14 October 2016, 14:40 hrs, UTC.

Please click link to read the full report.

Comment:

Here’s the latest update on activity at the Kilauea volcano from the Hawaiian Volcano Observatory.

Kilauea continues to erupt at its summit in the East Rift Zone.  The lava lake is rising “in concert with summit inflation.”  The 61g lava flow continues to enter the ocean at Kamokuna.  There is no immediate threat to nearby communities.

Be sure to check out the time lapse movies and thermal images of the Halemaumau Crater and the Kilauea Caldera.  The photos are stunning.


For the latest Hawaii Island, state of Hawaii, national, and sports news, please check out the blog sidebars.  These news feeds are updated daily.

Opinions expressed in this blog are mine unless otherwise stated.

Thanks for joining us today!

Until next time,

Russ Roberts

Hawaii News Digest

Volcano Watch: 2006 Kīholo Bay earthquakes spur monitoring improvements | Hawaii 24/7


Ten years ago shortly after 7 a.m., HST, on Sunday, October 15, 2006, two damaging earthquakes struck off the northwest coast of the Island of Hawai‘i—a magnitude-6.7 earthquake beneath Kīholo Bay …

Source: Volcano Watch: 2006 Kīholo Bay earthquakes spur monitoring improvements | Hawaii 24/7 (http://www.hawaii247.com/2016/10/13/volcano-watch-2006-kiholo-bay-earthquakes-spur-monitoring-improvements/).

Accessed on 14 October 2016, 14:20 hrs, UTC.

Please click link to read the full story.

Comment:

On 15 October 2016, two large earthquakes struck west Hawaii, doing considerable damage to roads, buildings, and utilities in Kohala, Kona, and Hamakua.  The Kiholo Bay temblor measured 6.7 on the open-ended Richter Scale, while the earthquake near Mahukona registered a magnitude 6.0.

Since that time, improvements in equipment, computer technology, and data collection have given USGS scientists at the Hawaiian Volcano Observatory a better understanding of the origin and potential effects of large seismic events.

Equipment upgrades are helping scientists analyze large earthquakes and potentially predict when these destructive events will occur.


For the latest Hawaii Island, state of Hawaii, national, and sports news, please check out the blog sidebars.  These news feeds are updated daily.

Opinions expressed in this blog are mine unless otherwise stated.

Thanks for joining us today!

Until next time,

Russ Roberts

Hawaii News Digest