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  • ES Picture of the Day 30 2021

    From Dan Richter@1:317/3 to All on Fri Jul 30 11:00:32 2021
    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.


    Sunspot Active Region AR12816 in April 2021

    July 30, 2021

    Arturo_sunspots_image0 (1)

    Arturo_sunspots_image1 (4)

    Photographer: Arturo Buenrostro
    Summary Author: Arturo Buenrostro; Jim Foster

    The Sun has been slowly awakening from a rather prolonged period of
    inactivity ( solar minimum). Shown above is a view of the Sun as
    observed from my home near Dallas, Texas, on April 24, 2021 –- top
    photo is a full disk view and bottom photo is a close-up. The close-up
    view focuses on the sunspots and magnetic field data in regions
    AR12816 and AR12818. Sunspots here are classified as Zurich
    Class C -- two or more spots demonstrating bi-polarity with either
    the lead spot or trailing spot having a penumbra.


    * Dallas, Texas Coordinates: 32.7767, -96.7970

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    Sun Links

    * NASA Solar Dynamics Observatory
    * NASA Solar Eclipse Page
    * NOAA Solar Calculator
    * The Sun-Earth Connection: Heliophysics
    * The Sunspot Cycle
    * Solar System Exploration: The Sun
    * The Sun Now
    * This Week’s Sky

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

    https://epod.usra.edu

    --- up 12 weeks, 12 hours, 15 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Mon Aug 30 11:00:34 2021
    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.


    Lunar Corona over Death Valley

    August 30, 2021

    Death Valley Moon Halo copy

    Photographer: Arpan Das
    Summary Authors: Arpan Das; Jim Foster

    This superb lunar corona was visible in Death Valley,
    California, one evening earlier this summer. The colorful rings, which
    add a little verve to the drab surrounds of Death Valley, could be
    observed with the naked eye. Coronas may be seen whenever mid-level
    clouds, composed of minute water droplets, are in the vicinity of
    the Moon or Sun. Diffraction of sunlight by the droplets results in
    the colored rings. Note that the gibbous Moon was slightly
    overexposed here in order to draw out the pastel colored rings.
    * Death Valley National Park, California Coordinates: 36.5323,
    -116.9325

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    Atmospheric Effects Links

    * Atmospheric Optics
    * 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 16 weeks, 3 days, 12 hours, 15 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Sat Oct 30 11:00:30 2021
    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.


    Archive - Jack-O'-Lantern Sun

    October 30, 2021

    6a0105371bb32c970b0162fbd236a5970d

    Every weekend we present a notable item from our archives.

    This spooky EPOD was originally published October 30, 2011.

    Photographer: Phil Lachman
    Summary Author: Phil Lachman; Jim Foster
    A freak pattern in the clouds as sunset approached produced this smiley
    Jack-O'-Lantern-like Sun as observed from a lookout over the
    Parramatta Valley of western Sydney, Australia. The
    reddened colors result from sunlight passing through a greater
    distance of atmosphere to reach the camera at this time of day as
    opposed to when the Sun is higher in the sky. In essence, the
    shorter wavelength blues and greens are removed almost
    completely, leaving the longer wavelength gold, red and pumpkin orange
    colors to paint the sky. Make sure to protect your eyes when
    looking toward the Sun. Photo taken on January 24, 2011.

    Photo details: Camera Maker: Canon; Camera Model: Canon EOS 50D; Focal
    Length: 135.0mm; Aperture: f/8.0; Exposure Time: 0.0008 s (1/1250); ISO
    equiv: 100; Exposure Bias: -0.67 EV; Metering Mode: Matrix;
    Exposure: aperture priority (semi-auto); White Balance: Manual; Flash
    Fired: No (enforced); Orientation: Normal; Color Space: sRGB. Software:
    Paint Shop Pro Photo 12.01.
    * Lookout Over the Parramatta Valley, Australia Coordinates:
    -33.80815, 151.08366

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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 8 weeks, 1 day, 21 hours, 55 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Thu Dec 30 11:00:34 2021
    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.


    Art Imitates Nature

    December 30, 2021

    Img5199

    Photographer: Rick Stankiewicz

    Summary Author: Rick Stankiewicz

    The Island of Kauai (The Garden Island of the Hawaiian Chain) is a
    wonderful destination for waterfalls, canyons, and lush vegetation.
    Geologically Kauai is the second oldest of the main Hawaiian
    Islands. With an area of 562.3 square miles (1456 square km), it is the
    fourth largest of the Hawaiian Islands, and the 21st largest island
    of the United States.

    One of the many waterfalls to see while visiting this paradise is
    Opaekaa Falls (means “Rolling Shrimp”), which is situated on the
    east side of the island. To admire the falls from a distance there is a
    drive-in lookout from Route 580, on the Kuamoo Road, located just west
    of Wailua. This 151 ft. (46m) high falls splits into three
    cascading channels that spill down a narrow valley. The day I visited
    this spot with my wife, we happened upon a local artist whom I think
    you will agree, captured the scene beautifully. Photo taken on February
    1st, 2006.

    Photo details: Nikon Coolpix E995, ISO 100, f/3.9, 1/160th, 12.4mm
    * Kauai, Hawaii Coordinates: 22.0533927, -159.3673107

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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
    * 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

    --- up 3 weeks, 4 days, 20 hours, 43 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)