• ES Picture of the Day 01 2022

    From Dan Richter@1:317/3 to All on Friday, April 01, 2022 12:00:54
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Winter Rainbow Observed Over Southern Slovakia

    April 01, 2022

    R. Barsa - Winter rainbow

    Photographer: Robert Barsa

    Summary Authors: Robert Barsa; Cadan Cummings

    This photo of a winter rainbow was taken on January 1, 2022, in
    southern Slovakia. The weather was abnormally warm over New Year’s,
    which caused the snow in the region to partially melt. Clouds to
    the east were producing light rain just before sunset. As a result
    of the water droplets suspended in the air from the rain and melting
    snow, a winter rainbow appeared over the nearby hills opposite the
    setting Sun.

    Although bows are visible throughout the year, liquid water droplet
    must be present in the air because snowflakes cannot produce the
    reflection required to produce the colorful phenomenon. In addition to
    the rainbow, Krásna Hôrka Castle is also visible in the left side
    of the photo on a hill over the village Krásnohorské Podhradie.

    Photo details: Sony A7III + Sony GM 16-35 mm, f/2.8 , panorama of 18
    images with exposure of 1/125 second exposure, ISO-100, @f/5.6
    * Jablonovské sedlo, Slovakia Coordinates: 48.6196, 20.6293

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    Atmospheric Effects Links

    * Atmospheric Optics
    * Optic Picture of Day: Gruppo Astrofili Galileo Galilei
    * Color and Light in Nature
    * The Colors of Twillight and Sunset
    * Refraction Index
    * Image Gallery: Atmospheric Effects
    * What is a Rainbow?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

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  • From Dan Richter@1:317/3 to All on Wednesday, June 01, 2022 12:00:36
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Multicolored Aurora Over Finland

    June 01, 2022

    RedAuroraSmaller

    Photographer: Dennis Lehtonen

    Summary Authors: Dennis Lehtonen; Cadan Cummings

    The photo above features a beautiful aurora display that occurred
    over Finland on February 11, 2022. This aurora event occurred due to
    energetic particles emitted from a coronal mass ejection on
    February 6^th interacting with the Earth’s magnetosphere.
    Although our planet’s magnetic field protects us from the solar
    wind, the energetic particles from geomagnetic storms are steered
    towards the north and south magnetic poles where they interact with
    oxygen molecules in the upper atmosphere to create a spectacular
    green and red display.

    To get a clear view of the event, I packed my gear and cycled a few
    kilometers to a swamp area located in middle of a forest. After around
    one hour of waiting, I saw something I had never seen before. Half of
    the sky began to be covered in faint red auroras. I knew something
    huge was about to happen and remarkably the sky came raining down with
    vibrant auroras. At around midnight the auroras had escaped to the
    south horizon, giving people in south- and mid-Finland an impressive
    display as well.
    * Sodankylä, Finland Coordinates: 67.416, 26.589

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    Atmospheric Effects Links

    * Atmospheric Optics
    * Optic Picture of Day: Gruppo Astrofili Galileo Galilei
    * Color and Light in Nature
    * The Colors of Twillight and Sunset
    * Refraction Index
    * Image Gallery: Atmospheric Effects
    * What is a Rainbow?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

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    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Friday, July 01, 2022 12:01:00
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    The Wonder of Roots

    July 01, 2022


    IMG_2570

    Photographer: Ray Major
    Summary Author: Ray Major

    I couldn’t help but notice this tree and its tentacle-like roots on a
    trail to Twin Falls in Pickens County, South Carolina. The
    roots appear to be crawling across a rock. It’s a testament to the
    tenacity of life on this planet. The small patch of soil on top of the
    rock, where the tree (possibly a Tree of Heaven, Ailanthus
    altissima) began to grow, was too small to support a mature tree.
    However, it was able to extend its roots and find deeper soil to draw
    in nourishment. After beginning life under less-than-ideal
    circumstances, it was able to survive, and thrive. It made quite a
    spectacle of itself in the process. Photo taken on July 7, 2008.

    Twin Falls, Pickens County, South Carolina Coordinates: 35.0098,
    82.8214


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    Plant Links

    * Discover Life
    * Tree Encyclopedia
    * What are Phytoplankton?
    * Encyclopedia of Life - What is a Plant?
    * USDA Plants Database
    * University of Texas Native Plant Database
    * Plants in Motion
    * What Tree is It?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 17 weeks, 4 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Monday, August 01, 2022 12:01:08
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Atacama Desert and Volcanic Twilight

    August 01, 2022


    DuskOnMarsWSMALLer

    Photographer: Tomas Slovinsky
    Summary Author: Tomas Slovinsky; Jim Foster

    The photo above showing a reddened twilight sky over a barren landscape
    comes from San Pedro de Atacama, Chile. It was taken on April 22, 2022.
    The Atacama Desert is almost at the same latitude as the Tonga
    Volcano that erupted in December of 2021. Throughout the autumn months
    (spring in the Northern Hemisphere), during each twilight period the
    sky was imbued with deep red colors as volcanic ash in the upper
    atmosphere acted to increase the pathlength of sunlight (and
    moonlight), thereby effectively extinguishing the shorter wavelength
    colors from our view.

    In many ways, the resulting landscape/nightscape resembled that of
    Mars at sunset. Also found in the Atacama are ancient, dry
    riverbeds, not too dissimilar from the ones discovered on Mars,
    where water once flowed in the past. On evenings such as this, you
    could almost imagine that you were on the Red Planet. Note that the
    patch of light at right center, to the right of the Milky Way, is the
    Large Magellanic Cloud.


    San Pedro de Atacama, Chile Coordinates: -22.9087, -68.1997


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    Atmospheric Effects Links

    * Atmospheric Optics
    * Optic Picture of Day: Gruppo Astrofili Galileo Galilei
    * Color and Light in Nature
    * The Colors of Twillight and Sunset
    * Refraction Index
    * Image Gallery: Atmospheric Effects
    * What is a Rainbow?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 22 weeks, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Thursday, September 01, 2022 12:01:08
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    First Light on the Circle Cliffs Anticline

    September 01, 2022

    TomMc_EPOD.TomCircleCliffsBurrWolverineTrailUT2022b (004)

    TomMc_EPOD.CircleCliffsStratigraphyB (003)

    Photographer: Thomas McGuire

    Summary Author: Thomas McGuire

    Baseball player Yogi Berra was famous for quotations such as “It’s
    so crowed, nobody goes there anymore.” Perhaps they shouldn’t.

    While places such as the Grand Canyon, Yellowstone and Yosemite host
    crowds that often overrun the facilities, as well as overrunning the
    visitor experience, other scenic sites in the United States are,
    arguably, just as beautiful and virtually undiscovered. One such place
    is the Grand Staircase-Escalante National Monument in southern
    Utah. Both the variety of landforms and the expansive size make this a
    crown of the hidden jewels.

    The Circle Cliffs is an anticline in which the central portion has
    been eroded down, while exposing the youngest layer as cliffs that
    surround the internal valley. This anticline encompasses hundreds of
    square miles of juniper, dotted high desert. In most of the
    Monument, facilities are non-existent. The Burr Trail is a paved
    road that crosses the Circle Cliffs Valley. Other roads are unpaved.

    TomMc_EPOD.CircleCliffsUpliftStratigraphyUTB (003)

    Geology of Grand Staircase-Escalante National Monument, Utah: Hellmut
    H. Doelling, Robert E. Blackett, Alden H. Hamblin, J. Douglas Powell,
    and Gayle L. Pollock



    Grand Staircase-Escalante National Monument, Utah Coordinates: 37.4609,
    -111.5943



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    Geology Links

    * Earthquakes
    * Geologic Time
    * Geomagnetism
    * General Dictionary of Geology
    * Mineral and Locality Database
    * Mohs Scale of Mineral Hardness
    * This Dynamic Earth
    * USGS
    * MyShake - University of California, Berkeley
    * USGS Ask a Geologist
    * USGS/NPS Geologic Glossary
    * USGS Volcano Hazards Program

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

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    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Saturday, October 01, 2022 12:01:04
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Basket Stinkhorn

    September 30, 2022

    Stinghorn

    Photographer: Mila Zinkova
    Summary Author: Mila Zinkova

    Shown above is the Basket Stinkhorn, Clathrus ruber, that I came
    upon during a walk in the woods not far from San Francisco, California.
    Its odor is repugnant to you and I but is evidently like catnip to
    flies. " They flock to her foetid scent, feed upon the
    spore-impregnated greenish-black gleba, and soar off, spreading
    stinkhorn spores in their wake."

    Most often found in temperate deciduous forests, Clathrus ruber
    hatches from an egg-like film. At the base of which is a mycelial
    “root,” that at this stage has little scent and might be edible to
    some. However, it doesn’t take long before its stench is so
    overpowering that only a creature like a fly could be attracted to it.
    Click here to see a video from hatching to decaying.



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    * USDA Plants Database
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    * Plants in Motion
    * What Tree is It?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

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    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Tuesday, November 01, 2022 12:01:14
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Wafer Thin Moon and Pumpkin Sky

    October 31, 2022


    MatthewC_DSC_1834s2s

    Photographer: Matthew Chin
    Summary Author: Matthew Chin; Jim Foster
    Can you spot the sliver of the crescent Moon? Because it was only about
    1.3% illuminated when this photo was snapped, at dawn on June 28, 2022,
    it isn’t exactly conspicuous against the pumpkin-colored sky. As night
    has now lost its grip, hordes of bats are returning to their caves
    (could this be the source of the dark smudge at lower right?) and other
    spooky, nocturnal creatures will soon be asleep in their lairs. Photo
    taken in Yuen Long, Hong Kong, on June 28, 2022, at 05:12 a.m. local
    time.

    Yuen Long, Hong Kong Coordinates: 22.4445, 114.0222


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    Night Sky Links

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    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

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  • From Dan Richter@1:317/3 to All on Thursday, December 01, 2022 11:01:10
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Mt. Baker at Sunrise

    December 01, 2022


    220830-3

    Photographer: Marli Miller
    Summary Author: Marli Miller

    Reaching an elevation of 10,781 feet (3,286 m), Mt. Baker dominates
    the landscape of northern Washington. This view, towards the WSW from
    near Lake Ann, shows two of the more than 15 named glaciers that
    descend in a radial pattern around the volcano: the Park Glacier on
    the right; and Boulder Glacier on the left.
    Mt. Baker, a stratovolcano, erupted andesite and dacite
    lavas from as far back as 140,000 years ago, but its most active period
    occurred between 25,000-12,000 years ago. It was during this time that
    it built its base and summit cone. Since then, it’s only erupted ash,
    although a collapse of one of its flanks occurred some 6700 years ago.
    Multiple small events took place during the 1800s and an increase in
    gas emissions in 1975 suggested the presence of new magma in the
    volcano. These emissions have tapered off through time.
    The USGS maintains an active monitoring program at Mt. Baker.
    Because of the extensive glaciers, even small eruptions can trigger
    devastating lahars (volcanic mudflows), which can flow great
    distances away from the volcano. Photo taken on August 22, 2022.

    Mt. Baker, Washington Coordinates: 48.832, -121.643


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    Geology Links

    * Earthquakes
    * Geologic Time
    * Geomagnetism
    * General Dictionary of Geology
    * Mineral and Locality Database
    * Mohs Scale of Mineral Hardness
    * This Dynamic Earth
    * USGS
    * MyShake - University of California, Berkeley
    * USGS Ask a Geologist
    * USGS/NPS Geologic Glossary
    * USGS Volcano Hazards Program

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

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    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)