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  • ES Picture of the Day 16 2021

    From Dan Richter@1:317/3 to All on Mon Aug 16 11:00:36 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.


    Comet NEOWISE Seen from Quebec City

    August 16, 2021

    C2020F3_NEOWISE_14juil20 - Copie - Copie - Copie - Copie - Copie

    Photographer: Philippe Moussette
    Summary Authors: Philippe Moussette; Jim Foster

    Shown above is a gorgeous view of Comet NEOWISE as observed last
    summer above Quebec City, Quebec, Canada. Chateau Frontenac
    dominates the foreground. Because NEOWISE has a long elliptical
    orbit, a view such as this won’t occur for another 6,800 years.
    Unfortunately, no bright comets are predicted to grace the sky in
    2021. Photo taken on July 14, 2020.

    Photo details: 1DX Mark III Cannon camera; 300 mm lens; f2.8; 2 seconds
    exposure time; 1600 ISO, on a fixed tripod.
    * Quebec City, Quebec, Canada Coordinates: 46.8139, -71.2080

    Related EPODs

    Comet NEOWISE Seen from Quebec City Atacama Desert Nightscape
    Archive - Star Trails Above Pemaquid Point Lighthouse, Bristol,
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    More...

    Night Sky Links

    * Space Weather Live
    * Space Weather Live Forum
    * About the Moon
    * American Meteor Society
    * Arbeitskreises Meteore e.V.
    * Global City Lights
    * Heavens Above Home Page
    * The International Meteor Organization
    * Lunar and Planetary Institute
    * MoonConnection
    * NASA Eclipse Web Page
    * Understanding The Moon Phases

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

    https://epod.usra.edu

    --- up 14 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 Thu Sep 16 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.


    22-Degree Halo Observed from Norfolk, Virginia

    September 16, 2021

    RobBruner_A61041B4-D730-44C3-8211-9072F4E559F7

    Photographer: Rob Bruner
    Summary Author: Rob Bruner; Jim Foster
    Stepping outside from lunch one day earlier this year, I couldn’t help
    but notice this 22-degre solar halo. Circular halos about the
    Sun (and Moon) are caused by randomly oriented ice crystals in the
    atmosphere that act like mirrors and prisms to reflect and refract
    light away from the Sun. The 22-degree halo, and in fact all halos, are
    polarized. Note the contrails at left center, running through
    and tangent to this halo. When looking in the vicinity of the Sun,
    always makes sure to protect your eyes. Photo taken near Norfolk,
    Virginia on May 2, 2021.
    * Norfolk Virginia Coordinates: 36.8508, -76.2859

    Related EPODs

    22-Degree Halo Observed from Norfolk, Virginia Archive - Fog,
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    Sicily, Italy
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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 1 week, 6 days, 21 hours, 55 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Sat Oct 16 11:00:28 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 - Pamukkale, Turkey

    October 16, 2021

    6a0105371bb32c970b019aff0ca352970d

    Every weekend we present a notable item from our archives.

    This EPOD was originally published September 16, 2013.

    Photographer: Andre Vicente Goncalves
    Summary Author: Andre Vicente Goncalves
    Shown above is the wondrous area of Pamukkale in southwestern
    Turkey, near the city of Denizli. The natural terraces in the
    foreground, composed primarily of calcite and aragonite, were
    formed by water flowing from hot springs having particularly high
    calcium carbonate ( travertine) content. Note the rain-shaft in
    the distance at left, while the Sun is still shining on the right-hand
    side of the photo. Crepuscular rays further enhance the lure of
    this scene. I was indeed fortunate to witness such a beautiful
    spectacle. Pamukkale was declared a World Heritage Site in 1988.
    Photo taken on August 17, 2013.

    Photo details: Camera Model: Canon EOS 5D Mark II; Lens: EF16-35mm
    f/2.8L II USM; Focal Length: 17mm; Focus Distance: Infinite; Aperture:
    f/8.0; Exposure Time: 0.0040 s (1/250); ISO equiv: 500; Software: Adobe
    Photoshop CC (Macintosh).
    * Denizli, Turkey Coordinates: 37.9205, 29.121

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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

    --- up 6 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 Tue Nov 16 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.


    Rock Glacier in Colorado Rockies

    November 16, 2021


    Stan_rockglacier

    Photographer: Stan Wagon

    Summary Authors: Andrew Fountain: Stan Wagon

    Rock glaciers are accumulations of ice and rock with rock exposed
    on the surface and ice hidden within the interior. Unlike talus
    slopes, rock glaciers flow. There are more than 650 rock glaciers in
    the Colorado mountains and this photograph shows a rock glacier near
    Colorado's Mt. Elbert (14,430 feet or 4,398 m), the highest peak in
    the Rocky Mountains. This feature is on the northeast side of the
    southeast ridge of Bull Hill (13,761 feet or 4,194), just south of
    Elbert. One can deduce the existence of ice under the rocks from the
    steepness of the rock face at the snout, the general inflated shape,
    and the evidence of down-valley flow. The example shown does not extend
    much down-valley so it may not be moving. Thus we would think of it as
    a "feature of interest", meaning that it has characteristics suggesting
    the presence of ice and might be a rock glacier. Photo taken on
    September 22, 2021.
    Photo details: SONY A6500 camera; ISO 250; f/14; 1/250 second exposure;
    53 mm.
    * Bull Hill Mountain (southeast ridge), Colorado Coordinates:
    39.09472, -106.4547

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    Fuego and Acatenango
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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 4 days, 16 hours, 24 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Thu Dec 16 11:00:24 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.


    Mountain Shadow Projected onto Clouds

    December 16, 2021

    IMG_3577

    Photographer: Elena Paschetto

    Summary Authors: Elena Paschetto; Cadan Cummings

    The photo above features a shadow of Monviso projected on the
    clouds around sunset. Monoviso is located in the Alps on the
    Italian-French border and is widely-known for its characteristic
    pyramid shape. At 12,600 ft (3,841 m) tall, the mountain is the tallest
    in the Cottian Alps. Due to Sun angle and the perspective of the
    viewer, mountain shadows appear triangular regardless of the actual
    shape of the mountaintop.
    * Paesana, Province of Cuneo, Italy Coordinates: 44.683, 7.283

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    Cloud Links

    * Atmospheric Optics
    * The Cloud Appreciation Society
    * Cloud Atlas
    * Color and Light in Nature

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

    https://epod.usra.edu

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