• ES Picture of the Day 31 2020

    From Black Panther@21:1/186 to All on Friday, January 31, 2020 09:01:06
    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.


    Twilight Sky at Mont-Saint-Michel

    January 31, 2020

    IMG_4713rid2 (1)

    Photographer: Elena Pinna
    Summary Authors: Elena Pinna; Jim Foster

    Featured above is a gorgeous twilight sky captured from a magical
    place: Mont-Saint-Michel (France). Because the Sun has already
    set, the tidal flats in the foreground take on a purple sheen. Note
    the waxing crescent Moon is at upper left-center. Venus,
    concealed by the glowing mid-level clouds, is barely visible to the
    lower right of the Moon. Photo taken on December 29, 2019.

    Photo Details: Camera: Canon EOS 6D; Software: Adobe Photoshop CC 2019
    (Windows); Exposure Time: 0.017s (1/60); Aperture: ƒ/6.3; ISO
    equivalent: 1000; Focal Length: 16.0mm; Lens: EF16-35mm f/4L IS USM.
    * Mont-Saint-Michel, France Coordinates: 48.636, -1.5114

    Related EPODs

    Twilight Sky at Mont-Saint-Michel Red Sprites and Airglow
    Double Rainbow Over LaJolla, California Encore - Green Flash
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    More...

    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

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  • From Black Panther@21:1/186 to All on Tuesday, March 31, 2020 09:01:38
    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.


    Death Valley’s Zabriskie Point

    March 31, 2020

    Deathvly513c_26feb20 (003)

    Photographer: Ray Boren
    Summary Author: Ray Boren

    In morning light, the creamy golden-yellows and chocolate browns of
    Zabriskie Point’s sculpted badlands seem to glow, as in this
    photograph, taken on February 26, 2020, in Death Valley National
    Park on the California-Nevada border. The vast park’s playas and
    the Furnace Creek oasis lie just beyond erosional formations like
    Manly Beacon, prominent here, while ridges and peaks of the
    Panamint Mountains rise to the west.

    The startling terrain of today’s Zabriskie Point is being carved mostly
    from Furnace Creek Formation mudstones, composed of fine silts,
    clays and volcanic ashfalls deposited as sediments in prehistoric lakes
    some three to five million years ago, as well as ancient lava flows.
    Rainfall here — the driest and hottest locale in North America, as
    well as the lowest (-282 feet/-86 m below sea level at Badwater
    Basin) — can be periodic but intense, so when storms drench the
    vegetation-sparse northern Mojave Desert landscape, the moisture
    doesn’t soak into the ground but rather gathers and careens in flash
    floods down slopes, rills and gullies, eroding the soft mudstones.

    Zabriskie Point is named for Christian B. Zabriskie (1864-1936),
    who was vice president of the Pacific Coast Borax Co. and managed
    operations in Death Valley during the transition from borax mining in
    the area to tourism. The palm-fringed Inn at Death Valley (formerly
    Furnace Creek Inn) opened nearby in 1927. Death Valley was declared a
    national monument by U.S. President Herbert Hoover in early 1933,
    and was expanded and re-designated a national park by the U.S. Congress
    in 1994, with more acreage added in 2019. It’s the largest national
    park in the United States outside of Alaska, encompassing 3,372,402
    acres (1,364,762.67 hectares).

    Photo Details: Camera: NIKON D3200; Exposure Time: 0.0020s (1/500);
    Aperture: ƒ/11.0; ISO equivalent: 220; Focal Length (35mm): 45.
    * Zabriskie Point, California Coordinates: 36.4201, -116.8122

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    - McMurdo Dry Valleys

    Climatology Links

    * Aerosols: Tiny Particles, Big Impact
    * JetStream - An Online School for Weather
    * Climate History
    * National Centers for Environmental Information
    * Global Climate Animations
    * NOAA Climate Analysis Branch
    * Vital Climate Graphics

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

    https://epod.usra.edu

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  • From Black Panther@21:1/186 to All on Friday, July 31, 2020 11:00:26
    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.


    Sleeping Giants, Mount Arenal and Cerro Chato

    July 31, 2020

    CROP
    Photographer: Russell Losco
    Summary Author: Russell Losco

    Mount Arenal is the youngest of Costa Rica’s volcanoes, being
    only about 40,000 years old and is part of the northernmost portion of
    the Cordillera de Tilaran. It’s an andesite stratovolcano
    that had erupted in the past, but all of these eruptions were
    pre-European contact, with the last one around 1500. Although it
    started showing some signs of activity in 1937, Arenal was considered
    to be a dormant volcano until 1968, when it erupted violently,
    wiping out three villages, killing 87 people and covering 6 sq miles
    (15 sq km) with pyroclastic material and lumpy, andesitic
    basalt lava. Arenal (5,436 ft or 1,657 m) erupted from 1968 until 2010
    when it entered a quiescent phase. Cerro Chato, Arenal’s smaller
    sibling, is located approximately three kilometers to the south and is
    a truncated volcanic cone that appears to be extinct. Photo taken on
    July 8, 2017.

    Photo Details: Camera Panasonic DMC-FZ70; Exposure Time 0.0020s
    (1/500); Aperture ƒ/4.2; ISO equivalent 200; Focal Length (35mm) 69.
    * La Fortuna, Costa Rica Coordinates: 10.4678, -84.6427

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    Geography Links

    * Atlapedia Online
    * CountryReports
    * GPS Visualizer
    * Holt Rinehart Winston World Atlas
    * Mapping Our World
    * Perry-Castañeda Library Map Collection
    * Types of Land
    * World Mapper

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

    https://epod.usra.edu

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  • From Black Panther@21:1/186 to All on Monday, August 31, 2020 11:01:04
    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.


    Sunset Observed from Mount Chasseral, Switzerland

    August 31, 2020

    Chasseral

    Photographer: Arnaud Besancon
    Summary Author: Arnaud Besancon

    Shown above is a captivating sunset scene I observed earlier this
    summer from Mount Chasseral, Switzerland (5,269 ft or 1,606 m). The
    camera is facing southeast. Lake Neuchâtel is at lower right. The
    ambiance created by the interplay of clouds, shadows and fading
    light was fantastic. At the top, the triangular shadow of Mount
    Chasseral can be seen cast upon the cloud deck. Note the rainbow
    fragment at the lower right-center. Photo taken on July 1, 2020.

    Photo Details: 5D3 camera; 135 mm; F11; ISO 100; 1/15 second exposure
    time.
    * Mount Chasseral, Switzerland Coordinates: 47.1330, 7.0594

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    More...

    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

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