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.


Anvil Clouds and Crepuscular Rays

January 25, 2022


Crepuscular Rays_2040pix

Photographer: Gianni Tumino

Summary Authors: Gianni Tumino; Jim Foster

The photo above showing eye-catching, flat-topped clouds and
crepuscular rays was taken from Ragusa, Sicily (Italy), just after
sunset on November 15, 2021. These distant anvil clouds
(Cumulonimbus incus) effectively block the Sun’s rays, but gaps between
them allow sunlight to filter through. The resulting lanes of light and
dark are made visible by dust or other aerosols in the atmosphere
that act to project the rays across the sky.

Photo details: CANON EOS 6D Mark II camera; SIGMA ART 24-105 MM lens;
38 mm; f/8; 1/180 second exposure; 100 ISO.
* Ragusa (Sicily), Italy Coordinates: 36.891735, 14.673495

Related EPODs

Anvil Clouds and Crepuscular Rays Twilight Colors over Biviere
di Cesarò Lake Double Rainbow Sunset Over Italy Solar Halos and
Pillars Observed Over Germany Belt of Venus Viewed from Sicily,
Italy Heiligenschein and Anticrepuscular Rays
More...

Atmospheric Effects Links

* Atmospheric Optics
* Optic Picture of Day: Gruppo Astrofili Galileo Galilei
* 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 7 weeks, 2 days, 20 hours, 43 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)

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


Related EPODs

Glacial Striations in Victoria, British Columbia Below the
Wasatch Range’s Storm Mountain Beautiful Alpine Lakes in the Sierra
Nevada Range Quechee Gorge in East Central Vermont Limestone
Stratification near Modica, Sicily Strawberry Moon and Etna Exhaust
More...

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 38 weeks, 4 days, 21 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)

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.


Fernlike Snow Crystal

December 25, 2022

Wilson_snow_crystal_1e018f4a57d4c9c72ca62b8e6a3b374a

Photographer: Wilson Bentley

Summary Author: Jim Foster

The lacy crystal shown above, as well as hundreds of other snow
crystals, were first photographed by Wilson Alwyn Bentley (1865-1931).
These photomicrographs are housed at the Bentley Snow Crystal
Collection in the Schwerdtfeger Library, at the University of
Wisconsin. According to the Lee/Magano system, this lovely specimen
is classified as a fernlike dendrite snow crystal ( P2e). Snow
crystals are six-sided because the water molecules that form them are
characteristically arranged in layers of hexagonal rings. This
results in their stunning six-fold symmetry.



Related EPODs

Fernlike Snow Crystal Frost Crack in Linden Tree
Triboluminescence Observed on Perito Moreno Glacier Snowflakes
on Mount Etna Ice Crystal Formation on Frozen Soap Bubble 2022
Ice Out Dates for Sebago Lake, Maine
More...

Cryosphere Links

* Guide to Frost
* What is the Cryosphere?
* Bentley Snow Crystals
* Glaciers of the World
* Ice, Snow, and Glaciers: The Water Cycle
* The National Snow and Ice Data Center Google Earth Images
* Snow and Ice Crystals

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

https://epod.usra.edu

--- up 42 weeks, 6 days, 21 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)