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  • ES Picture of the Day 15 2021

    From Dan Richter@1:317/3 to All on Sun Aug 15 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.


    Archive - Bonneville Salt Flats Panorama

    August 14, 2021

    6a0105371bb32c970b015393c1cce4970b Every weekend we present a
    notable item from our archives. This EPOD was originally published
    December 7, 2011.

    Photographer: Bret Webster
    Summary Authors: Bret Webster; Jim Foster
    The panorama above shows a view of the Bonneville Salt Flats and
    surrounding mountain ranges in northwestern Utah. Steady winds have
    ruffled Bonneville’s surface forming the conspicuous windrow. A
    combination of wind and water created these salt flats. When rain
    falls here, during the cold season, it accumulates in a very thin layer
    since the surface is so level it has nowhere to drain. As the weather
    warms, the shallow lake water slowly evaporates, adding a new layer
    of salt, chiefly potassium, magnesium or sodium chloride.
    Note that it's likely that the new salt is really a combination of old,
    recrystallized salt, as well as some new additional salts that
    drain into the lake from the surrounding hills. Panorama taken on July
    10, 2010.

    Photo Details: Camera: Canon EOS 5D Mark II; Focal Length: 15.0mm;
    Aperture: f/16.0; Exposure Time: 0.0040 s (1/250); ISO equiv: 40;
    Software: DXO Optics Pro v6.
    * Bonneville Salt Flats, Utah Coordinates: 40.79972, -113.8

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    Archive - Bonneville Salt Flats Panorama Mount Etna – Eruption
    Plume and Scattered Lapilli Willow Falls Near Hudson, Wisconsin
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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 14 weeks, 2 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 Wed Sep 15 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.


    Parisian Mammatus Clouds

    September 15, 2021

    Parisian mammatus clouds

    Photographer: Bertrand Kulik

    Summary Author: Bertrand Kulik

    The photo above features several mammatus clouds taken over Paris
    following a storm. Most often found near thunderstorm anvil clouds,
    mammatus clouds are pouch-like pouches that are composed largely of ice
    and water vapor. Although they are associated with severe weather,
    especially hail and thunderstorms, the clouds are not a warning of bad
    weather to come. After around 10 to 15 minutes, the clouds usually
    disappear as the water droplets and ice slowly evaporate.

    Photo Details: Canon EOS 5D Mark III, EF50mm f/1.8 STM lens, ƒ/9.0,
    50.0 mm, 1/640 second exposure, ISO-50
    * Paris, France Coordinates: 48.8566, 2.3522

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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, 5 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 Fri Oct 15 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.


    Sea Lung Jellyfish

    October 15, 2021

    IMGP5217 2

    Photographer: Michela Meda

    Summary Author: Michela Meda; Cadan Cummings

    The photo above features a jellyfish known in the Mediterranean as
    the “ sea lung” ( Rhizostoma Pulmo). The sea lung is a large
    species of jellyfish that has a semispherical-shaped cap and is
    opalescent, transparent white colored with a blue-violet edge. One of
    the larger species of jellyfish, the sea lung can reach impressive
    lengths over 59 inches (160 cm) long, grow to 20-24 inches (50-60 cm)
    in diameter, and weigh up to 22 pounds (10 kg). Anatomically, the
    central body area of a jellyfish is sometimes called a dumbbell and
    is composed of eight extensions of white curled and lumpy fabric, from
    which extends eight tentacles. The name of sea lung is due to the
    typical throbbing movement of the jellyfish as it swims, usually in
    shallow waters and lagoons. During the summer storms and the arrival of
    winter, jellyfish can become beached and sometimes these events can
    occur in large numbers.

    The sea lung eats primarily plankton and other small prey.
    Uniquely, this species of jellyfish often lives in symbiosis with
    small fish that protect it from the predators swimming inside the
    umbrella. Although moderately venomous, this type of jellyfish is
    not particularly dangerous to humans and only causes temporary minor
    irritation, burning skin, and itching for particularly sensitive
    individuals. This can occur In water when it releases stinging
    substances for defensive purposes that cause small abrasions of strong
    itching and slight burning.
    * Marina di Vasto, Chieti, Italy Coordinates: 42.111583, 14.708222

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    Animal Links

    * Animal Diversity Web
    * ARKive
    * BirdLife International
    * Bug Guide
    * Discover Life
    * Integrated Taxonomic Information System
    * Microbial Life Resources
    Earth Science Picture of the Day is a service of the
    -
    Universities Space Research Association.

    https://epod.usra.edu

    --- up 6 weeks, 21 hours, 55 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Mon Nov 15 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.


    Fogbow Over Southern Ontario, Canada

    November 15, 2021

    Fogbow

    Photographer: Malcolm Park

    Summary Author: Malcolm Park; Cadan Cummings

    Around 8:00am local time on September 16, Southern Ontario, Canada
    was covered in a morning fog. It is not uncommon for fog to form in
    the late summer into the fall as temperatures begin to drop at night,
    which causes water vapor in the air to condense. I went for my
    morning walk, and I noticed this amazing fogbow in the west. This
    was by far the best fogbow I have ever seen, but I haven't seen that
    many. I checked on my phone, and the Sun was at about 12 degrees
    altitude above the eastern horizon when I captured this picture.
    Different to rainbows, fogbows form when light interacts with
    condensed water vapor (fog) in the air instead of the comparably larger
    diameter water droplets present after a rainstorm. In fact, it is this
    difference in droplet size that makes the fogbow less colorful because
    light is refracted and reflected differently in fog than by a
    raindrop. After my walk, I drove west for about an hour and the fog as
    well as fogbow persisted for most of the drive. So, it was widespread
    from my experience, and I also saw reports of it online from other
    areas of the province.

    Photo Details: iPhone SE using panorama mode
    * Ontario, Canada Coordinates: 44.365, -76.627

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    More...

    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 3 days, 16 hours, 25 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Wed Dec 15 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.


    Crepuscular Ray and Venus

    December 15, 2021

    RaggioCrepuscolare_FG

    Photographer: Filippo Galati

    Summary Authors: Filippo Galati; Cadan Cummings

    This beautiful photograph shows a crepuscular ray projected towards
    Venus at sunset. Crepuscular rays are beams of sunlight that
    appear to radiate from a single point in the sky. The eye-catching
    phenomenon appears soon after time of sunset and is caused by a
    cloud or landscape feature on the horizon that partially blocks the
    sun’s light. Although crepuscular rays appear as diverging beams of
    light interspersed with areas of shadow, they are actually parallel to
    one another. This optical divergence is due to perspective.

    Photo details: Sony ILCE-7M3 + Tamron 28-75 @35mm HDR 5 shots f/9 ISO
    100
    * Modica, Province of Ragusa, Italy Coordinates: 36.8588, 14.7608

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    Palma, Canary Islands Noctilucent Clouds Over Northern Italy
    More...

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