• ES Picture of the Day 26 2022

    From Black Panther@21:1/186 to All on Tue Apr 26 12:00:58 2022
    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.


    Effect of Rainfall on Ornamental Flowers

    April 26, 2022

    Menashe_Picture1_Feb22a

    Menashe_Picture2_Feb22a
    Photographer: Menashe Davidson

    Summary Author: Menashe Davidson

    Many researchers, including Charles Darwin, have speculated that
    flowers may have evolved certain traits or structures to protect
    themselves against the damaging effects of rain, which can wash away
    pollen grains and dilute nectar. This finding could explain why many
    species in rainy areas either have droopy flowers or close their
    petals.

    The photos above were taken in my home garden in Rishon Le Zion Israel,
    on December 21, 2021, following a stormy day with 2.75 inches (70 mm)
    of rainfall. Three ornamentals' flowers, adjacent to each other,
    demonstrate different traits regarding their reaction to the rainfall.

    At center is a petunia, genus in the family Solanaceae. Without any
    structure or trait to protect itself against the heavy rainfall,
    significant reproductive damage was caused. We can see that the petals
    are considerably withered.

    At right is a cyclamen, perennial in the family Primulaceae. With a
    flower shape in which the sexual organs are facing the ground, the
    pollen is nearly completely protected by the flower structure. At left
    is a narcissus, perennial plant of the amaryllis family. Here we
    can that temporal bending of the flower stalks changes the orientation
    of the flower to protect its sexual organs.

    On the collage at bottom, pictures of the same species were taken
    4-days later, on the first sunny day after the storm event. I was
    astonished by the revival of the petunia plant! A new, gorgeous flower
    had just opened. Note that the withered flowers were cut.

    As can be observed by their vigor, all of these plants seem to be
    positively responding to the increased soil moisture and the sunshine.
    * Rishon Le Zion, Israel Coordinates: 31.9730, 34.7925

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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 8 weeks, 1 day, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Thu May 26 12:00:32 2022
    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.


    Trapped in a Spider Web

    May 26, 2022

    Spider vs. Bee RIP Bee

    Photographer: George Seielstad

    Summary Author: George Seielstad

    A backlit spider web is a thing of symmetry and beauty. However,
    it is also a trap, as this unfortunate bee has discovered. Although
    only a few micrometers across, the tensile strength of the spider
    web is very impressive. As is shown above, only two strands is
    sufficiently strong to support the combined weight of the bee and
    spider.
    The second photo shows a more securely wrapped wasp, who was
    subsequently dragged up to the spider's hideout under the eaves of our
    garage. The two stages of entrapment spanned 21 minutes.
    * Missoula, Montana Coordinates: 46.872, -113.994

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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 12 weeks, 3 days, 20 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Sun Jun 26 12:00:58 2022
    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.


    Sun Plunging into the Mist and Sea

    June 24, 2022

    Sole e foschia

    Photographer: Emanuele Nifosì

    Summary Authors: Emanuele Nifosì; Cadan Cummings

    Shown above is the setting Sun captured as it passed through a
    thick layer of clouds and mist on the horizon. The vibrant hues of
    sunset and sunrise are a product of atmospheric scattering. When
    the Sun is low to the horizon, the incoming sunlight must pass through
    a greater amount of our atmosphere. During these times of the day,
    shorter wavelengths of light (violet, blue, green) are more
    strongly scattered out of sight compared to the longer wavelength hues
    (orange and red). Looking closely at the solar disk, it is also
    possible to appreciate, without a filter, the sunspot AR 2976 at 12
    o'clock. Always protect your eyes and optics when viewing the Sun.
    Photo taken on March 24, 2020, at around 6:19 pm local time.

    Photo details: Nikon D700, Skywatcher ED 50, Hyperion 17mm, ISO 1600,
    exp 1/400 sec.
    * Scicli, Ragusa, Sicily, Italy Coordinates: 36.7932, 14.7070

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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 16 weeks, 6 days, 21 minutes
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  • From Black Panther@21:1/186 to All on Tue Jul 26 12:01:16 2022
    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.


    Water Eruption

    July 25, 2022

    Eruzione d'acqua 2

    Photographer: Emanuele Nifosì

    Summary Author: Emanuele Nifosì

    Near the village of Sampieri, Italy, there is an approximately
    three foot or one-meter diameter natural well along the cliff that
    connects to the sea through a canal. This opening is the result of
    natural erosion that happened over the past centuries and consists
    of two main segments- the first part is on the surface while the other
    section is underground. Depending on the meteorological and marine
    conditions, which on the day of these photos included wind from the
    south-east with gusts of 25-30 miles per hour (40-50 kilometers per
    hour) and rough sea, the water column reaches this opening and explodes
    upwards to over six and a half feet or two meters in height. Photo
    taken on April 2, 2022.
    * Sampieri, Ragusa, Sicily, Italy Coordinates: 36.7219, 14.7370

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    Hydrology Links

    * Current Sea Surface Temperature
    * NOAA Ocean Explorer Gallery
    * Ocean Color
    * What is hydrology?
    * Tides and Currents
    * Water Resources of the United States
    * World Waterfall Database
    * The USGS Water Science School
    * World Water Database
    * The World’s Water
    * USGS Surface Water Information Pages

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

    https://epod.usra.edu

    --- up 21 weeks, 1 day, 21 minutes
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  • From Black Panther@21:1/186 to All on Fri Aug 26 12:00:40 2022
    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.


    Yellow-bellied Sapsucker in North Carolina

    August 26, 2022

    PattiW_DSC02848 (005)

    PattiW_IMG_9459 (005)

    Photographer: Patti Weeks

    Summary Author: Patti Weeks

    The Yellow-bellied sapsucker (Sphyrapicus varius) is “one of the
    most migratory of woodpeckers,” as stated on the audubon.org
    website. Thus, this male sapsucker, whose photo I took February 3,
    2022, on a sugar maple tree in an eastern North Carolina arboretum,
    departed this spring for a breeding ground somewhere in the
    northeastern United States, eastern Alaska or Canada. The range of this
    sapsucker’s breeding territory has edged even further northward
    however, due to global warming. The Yellow-bellied sapsucker’s
    winter territory includes the southern and southeastern United States,
    Mexico, Central America and the West Indies. Territories of the other
    sapsuckers (Red-napped, Red-breasted and Williamson’s) are further west
    in the U.S. and Canada.

    The sapsucker perches vertically on the tree trunk, propping itself
    with its tail, and drills holes in neat rows (as seen in the second
    photo on a pecan tree.) It returns to the “ sapwells” to consume
    the sap as it oozes (inset is a close-up photo of oozing sapwells on a
    sugar maple). The moniker ‘sapsucker’ is misleading, as the bird
    actually sips the sap with hairlike structures on its tongue. Up to
    1,000 trees and woody plants have been identified as food sources for
    Yellow-bellied sapsuckers, but they prefer maple and birch trees.
    They also feed on insects, fruit, berries and nuts. Sapsuckers are
    considered a “ keystone” species, providing a crucial role in the
    health of their surrounding ecological community. Many other
    organisms are drawn to the sap, including bees, wasps, butterflies,
    squirrels, bats and other types of birds, particularly hummingbirds. In
    some areas, as many as 35 bird species have been reported to feed on
    the sap and the insects it attracts.

    Patti_inset

    The elevation of the Yellow-bellied sapsucker’s range can vary from
    10,000 ft. (3200 meters) to sea level. The Pitt County Arboretum here
    in Greenville, North Carolina is 56 ft (17 m) above sea level. Perhaps
    I will see this fella again, when it returns here to its wintering
    territory.


    Pitt County Arboretum, Greenville, North Carolina Coordinates: 35.6396,
    -77.3606

    Frozen Sap of a Yellow Birch Tree

    Harvesting Maple Syrup


    Categories: _AnimalLinks | Animals | Trees & Shrubs |
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    Animal Links

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

    https://epod.usra.edu

    --- up 25 weeks, 4 days, 20 minutes
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  • From Black Panther@21:1/186 to All on Mon Sep 26 12:01:10 2022
    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.


    Total Lunar Eclipse of May 15/16, 2022

    September 26, 2022


    LunarEclipseComposite.2022May15-16
    Photographer: Howard L. Cohen
    Summary Author: Howard L. Cohen
    The total lunar eclipse of May 15/16, 2022 was extraordinary as it
    was not only visible over most of the Americas but also its duration of
    totality lasted about 85 minutes. In addition, the Moon was at perigee
    and thus a Supermoon. Unfortunately, cloudy weather occurred over
    some areas, including my location in north Florida. In fact, rain,
    lightning, and thunder during the early evening delayed me from setting
    up my telescope and camera. However, skies started clearing by 9:00
    p.m. local time, allowing the first good views during the ongoing
    penumbral portion of the eclipse. Though clouds now and then hid
    the Moon, I still managed to assemble a number of useful images for
    this eclipse composite.
    Photo details: APO Refractor telescope; Tele Vue 76 (76 mm); f/6.3;
    iOptron, iEQ30 mount; Canon DSLR EOS 5D II camera; variable exposures
    times


    Gainesville, Florida Coordinates: 29.6516, -82.3248


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    Night Sky Links

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    * Heavens Above Home Page
    * The International Meteor Organization
    * Lunar and Planetary Institute
    * MoonConnection
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    * Understanding The Moon Phases

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

    https://epod.usra.edu

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