Uncategorized
The mysterious flashing phenomenon of earthquake lightning
Luminescence due to the influence of rocks. Credit: Yuji Inomoto, School of Textile Science and Engineering, Shinshu University
Were you aware that earthquakes are sometimes associated with luminescence, called earthquake lightning? This phenomenon has been documented throughout history, such as between 1965 and 1967, the Matsushiro earthquake swarm caused the surrounding mountain to flicker multiple times. In 1993, when an earthquake triggered a tsunami off the coast in southwest Hokkaido, 5 boats were set ablaze and burned ashore. Various models have been proposed to explain earthquake lightning, and different factors appear to contribute to such light emissions. Professor Emeritus Yuji Inomoto of Shinshu University, first author of the study “Laboratory Investigation of Earthquake Lightning from Landslide”, does not believe that these accidents can be interpreted in a uniform way using a single model.
Therefore, the study focused on the flashing phenomenon resulting from landslides. The team selected different types of rocks that make up the mountains that represent Earth across Japan; Granite, lava rock, rhyolite, limestone and serpentinite. What he found is that different rocks have different causes to shine and some rocks like serpentinite do not emit light at all.
Granite is known to exhibit remarkable light emission due to the piezo effect of quartz inside. There have been witness accounts of the lightning earthquake in the granite-free areas. Researchers looked at earthquake lightning descriptions in the Japan Historical Earthquake Archive. At least 5 of the 55 accounts of earthquake lightning were due to landslides since AD 869
You can probably imagine how light could be emitted when rocks collide violently. However, the shine of the rocks is instant and subdued. For this reason, ultra-sensitive, high-speed, and high-resolution ultra-sensitive cameras and spectrophotometers were needed to study. Fortunately, premium cameras with an ISO sensitivity of 25600 were available in the market at relatively low prices. For hypersensitive spectrum analysis a suitable device for this purpose was commercially available but very expensive. Fortunately, the research team managed to borrow one from Konica Minolta, and the difficulty in continuing the search was resolved.
Biotic granite (fixed terms) Credit: Tsuneaki Yamabe, School of Textile Science and Engineering, Technical Staff. Laboratory investigation of earthquake lightning due to landslides, Earth, planets and space (2020)
There are many cases in which electromagnetic anomalies associated with earthquakes have been documented while the cause remains a mystery. Although it is a rare phenomenon, Professor Fakhry Inomoto feels an obligation as a tribologist to elucidate such phenomena. He hopes that understanding such phenomena will advance earthquake prediction and promote effective disaster prevention.
Bio-granite (Charpy Emission) Credit: Tsunyaki Yamabe, School of Textile Sciences and Engineering, Technical Staff. Laboratory investigation of earthquake lightning due to landslides, Earth, planets and space (2020)
During the 2011 Tohoku-Aoki earthquake of magnitude 9.0, the number of electrons in the ionosphere suddenly increased above the epicenter about 10 minutes after the earthquake. Enomoto studied this accident and proposed a model of coupling of the lithosphere, hydrosphere, atmosphere and ionosphere in terms of the current generation of charged fog. He is currently working on explaining why in 1995, during the Hyogo-ken Nanbu earthquake, the normally dark sky in the west became brighter than usual, changing color from bluish purple, white, then red. This is a difficult task. Enomoto hopes to compile a book on research outreach that explains these incidents so they can be understood by a wider audience.
Google Android Phones to Help with Earthquake Alerts and Searches More information: Yuji Enomoto et al, Laboratory Investigation of Earthquake Lightning due to Landslides, Earth, Planets and Space (2020). DOI: 10.1186 / s40623-020-01237-8
Provided by Shinshu University
Quote: Mysterious Flashing Phenomenon of Earthquake Lightning (2020, Sep 28) Retrieved September 28, 2020 from https://phys.org/news/2020-09-mysterious-luminescence-phenomena-earthquake-lightning.html
This document is subject to copyright. Notwithstanding any fair treatment for the purpose of private study or research, no part may be reproduced without written permission. The content is provided for informational purposes only.
What Are The Main Benefits Of Comparing Car Insurance Quotes Online
LOS ANGELES, CA / ACCESSWIRE / June 24, 2020, / Compare-autoinsurance.Org has launched a new blog post that presents the main benefits of comparing multiple car insurance quotes. For more info and free online quotes, please visit https://compare-autoinsurance.Org/the-advantages-of-comparing-prices-with-car-insurance-quotes-online/ The modern society has numerous technological advantages. One important advantage is the speed at which information is sent and received. With the help of the internet, the shopping habits of many persons have drastically changed. The car insurance industry hasn't remained untouched by these changes. On the internet, drivers can compare insurance prices and find out which sellers have the best offers. View photos The advantages of comparing online car insurance quotes are the following: Online quotes can be obtained from anywhere and at any time. Unlike physical insurance agencies, websites don't have a specific schedule and they are available at any time. Drivers that have busy working schedules, can compare quotes from anywhere and at any time, even at midnight. Multiple choices. Almost all insurance providers, no matter if they are well-known brands or just local insurers, have an online presence. Online quotes will allow policyholders the chance to discover multiple insurance companies and check their prices. Drivers are no longer required to get quotes from just a few known insurance companies. Also, local and regional insurers can provide lower insurance rates for the same services. Accurate insurance estimates. Online quotes can only be accurate if the customers provide accurate and real info about their car models and driving history. Lying about past driving incidents can make the price estimates to be lower, but when dealing with an insurance company lying to them is useless. Usually, insurance companies will do research about a potential customer before granting him coverage. Online quotes can be sorted easily. Although drivers are recommended to not choose a policy just based on its price, drivers can easily sort quotes by insurance price. Using brokerage websites will allow drivers to get quotes from multiple insurers, thus making the comparison faster and easier. For additional info, money-saving tips, and free car insurance quotes, visit https://compare-autoinsurance.Org/ Compare-autoinsurance.Org is an online provider of life, home, health, and auto insurance quotes. This website is unique because it does not simply stick to one kind of insurance provider, but brings the clients the best deals from many different online insurance carriers. In this way, clients have access to offers from multiple carriers all in one place: this website. On this site, customers have access to quotes for insurance plans from various agencies, such as local or nationwide agencies, brand names insurance companies, etc. "Online quotes can easily help drivers obtain better car insurance deals. All they have to do is to complete an online form with accurate and real info, then compare prices", said Russell Rabichev, Marketing Director of Internet Marketing Company. CONTACT: Company Name: Internet Marketing CompanyPerson for contact Name: Gurgu CPhone Number: (818) 359-3898Email: [email protected]: https://compare-autoinsurance.Org/ SOURCE: Compare-autoinsurance.Org View source version on accesswire.Com:https://www.Accesswire.Com/595055/What-Are-The-Main-Benefits-Of-Comparing-Car-Insurance-Quotes-Online View photos
Picture Credit!
to request, modification Contact us at Here or [email protected]