• ES Picture of the Day 26 2022

    From Black Panther@21:1/186 to All on Saturday, November 26, 2022 11:01:18
    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.


    Glacial Striations in Victoria, British Columbia

    November 25, 2022


    L1005811

    Photographer: Joe LaCour

    Summary Author: Joe LaCour

    Just a few hundred meters southeast and across the street from where
    the Coho ferry docks in downtown Victoria, British Columbia,
    you can see a great example of the power of the glaciers from a
    previous ice age. Some 15,000 years ago, a glacier flowed over what
    is now Victoria. The surface of the outcrop shown above was
    grooved, scratched, and polished by the cutting action of pebbles
    and boulders dragged along like a piece of giant sandpaper frozen to
    the bottom a glacier. This fascinating ice age relic might be easy to
    miss as the attention of many passers-by is captured by the striking
    Legislative Parliament Building (not in photo). Note that the
    bronze plaque in the foreground - Glacial Grooves and Striations
    - acknowledges Victoria's glacial history.

    Photo details: Leica M9 Digital camera; 35mm Summicron lens; f13; 1/60
    second exposure; ISO320; processed with DxO PhotoLab.


    Victoria, British Columbia, Canada Coordinates: 48.4284, -123.3656


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

    https://epod.usra.edu

    --- up 38 weeks, 5 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Friday, August 26, 2022 12:00:40
    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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    Earth Science Picture of the Day is a service of the
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    Universities Space Research Association.

    https://epod.usra.edu

    --- up 25 weeks, 4 days, 20 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)