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.


São Miguel Island and Santa Iria Vista

February 06, 2020

Azores

Photographer: Cédric Pereira
Summary Author: Cédric Pereira

São Miguel is a volcanic island, in the Portuguese Azores
island chain, that’s sometimes called the Green Island. A mild
climate and ample rainfall contribute to the humid forests and
green fields found here. I was lucky to capture this rainbow when I
stopped by one of the island’s most beautiful vistas, Santa Iria.
From this vantage point, the blue Atlantic Ocean extends as far as
the eye can see. Photos taken on January 20, 2020.

Photo Details: Panorama composed of 5 pictures. Huawei P20 Pro camera;
F/1.8; ISO 50; 1/3000 exposure time.
* Santa Iria Lookout, Portugal Coordinates: 37.8225, -25.518056

Related EPODs

São Miguel Island and Santa Iria Vista Julia Pfeiffer Burns
State Park Rithet’s Bog on Vancouver Island Archive - Casa do
Penedo in Portugal Archive - Landscape Boundary: The Mogollon Rim
Bisti Wilderness Mushrooms
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 2 weeks, 1 day, 15 hours, 4 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

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.


Captivating Sunset from Portland, Oregon

March 06, 2020

Dana's Sunset

Photographer: Dana Buhl
Summary Authors: Thom Peck; Jim Foster

This captivating sunset was observed near Portland, Oregon on
January 30, 2020. At eye level the Sun has already set, but at
cloud level sunlight still lingers, tinging these wavy altocumulus
clouds in shades of pink and purple. The increased path length
of sunlight when the Sun is near or below the horizon is responsible
for the reddening of the sky. However, if clouds or aerosols are
absent, the twilight sky generally fails to take on the magnificent
hues that capture our attention.
* Portland, Oregon Coordinates: 45.5051, -122.6750

Related EPODs

Captivating Sunset from Portland, Oregon Halo Formation above
Cadini di Misurina, Italy Encore - Upper Tangent Arc, Halo, Sundogs
and Glitter Path Observed from Vancouver Encore - Fogbow Near Mount
Luxmore, New Zealand Corona Over Westmoreland State Park, Virginia
Twilight Sky at Mont-Saint-Michel
More...

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 6 weeks, 2 days, 15 hours, 5 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

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.


Santa Ana Wave Clouds

April 06, 2020

MarkR_lent

Photographer: Mark Ritter
Summary Authors: Mark Ritter; Jim Foster

This impressive scene showing the Santa Rosa Plateau and a
breathtaking sky was taken from Murrieta California, on February 2,
2020. The Santa Ana Mountains are in the background. Airflow over
these mountains initiated an atmospheric wave and the formation of
orographic wave clouds. The layered look to these lenticular
clouds resulted because enough moisture was available and because the
air stream aloft was quite strong, for several consecutive hours. Thus,
at the wave crests, layers of clouds formed one upon the other.
* Murrieta, California Coordinates: 33.5539, -117.2139

Related EPODs

Santa Ana Wave Clouds Sierra Wave Glaciated Clouds Over
Paris Altocumulus Wave Clouds Over Melkbosstrand, South Africa
Frozen Forest Wave Clouds at Sunrise Over the Front Range of
Colorado
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 10 weeks, 5 days, 14 hours, 5 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

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.


Encore - Development of a Lightning Strike

June 06, 2020

_sequence_flatten_CS3 August 2014 Viewer's Choice
Today and every Saturday Earth Science Picture of the Day invites you
to rediscover favorites from the past. Saturday posts feature an EPOD
that was chosen by viewers like you in our monthly Viewers' Choice
polls. Join us as we look back at these intriguing and captivating
images.
Photographer: Greg Parker
Summary Authors: Greg Parker; Jim Foster

The photo sequence above shows the development of a lightning
strike over southern England, on the night of July 18, 2014. This
particular cloud-to-ground bolt looks like the classic lightning
bolt used to alert people of the danger of an approaching storm. It may
seem like exposure 3 (out of 10) is out of sequence, but in fact this
is the return stroke -- returning from the ground to the cloud. If
lightning is observed to flicker, there's more than one return stroke.
Following the initial stroke, when the lightning channel has been
cleared of charged electrons, other electrons outside this channel may
enter it, initiating another stroke. This can occur multiple times over
a fraction of a second making the bolt appear to flicker.

Electrical storms in England, while not rare by any means, occur on
average only about 5 days during the summer season.
* New Forest Observatory, U.K. Coordinates: 50.819700, -1.590349

Related EPODs

Encore - Development of a Lightning Strike One View, Four
Rainbows Anticrepuscular Rays and Lunar Eclipse Encore - Summer
Lightning in Florida Twilight Times: Civil, Nautical and
Astronomical Approach of Storm and Lunar Halo
More...

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 19 weeks, 3 days, 16 hours, 4 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

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.


Edmaier’s Secret

July 06, 2020

EdmaiersTowerMediumRes

EdmaiersLaceRockEastSideMediumRes

Photographer: Stan Wagon
Summary Author: Stan Wagon
EdmaiersWavyNavajpSandstoneMedRes Lacy sandstone formations in
Navajo sandstone, such as the ones shown in the above photos, are
abundant in an area known as Edmaier's Secret, near the head of
Buckskin Gulch in Vermilion Cliffs National Monument (Utah).
Such eye-catching rocks may form when shear zones are found in
sandstone and these zones in turn are in close proximity to
fault zones. Photos taken on May 8, 2020.

Photo Details: Top - Camera SONY ILCE-6500; Software Adobe Photoshop CC
2018 (Macintosh); Exposure Time 0.0031s (1/320); Aperture ƒ/11.0; ISO
equivalent 160; Focal Length (35mm) 43. Bottom - same except: Exposure
Time 0.0010s (1/1000); Aperture ƒ/18.0; ISO equivalent 4000; Focal
Length (35mm) 67. Inset- same except: Exposure Time 0.0008s (1/1250);
Aperture ƒ/16.0; Exposure Manual; ISO equivalent 1600; Focal Length
(35mm) 46.
* Vermilion Cliffs National Monument, Utah Coordinates:
36.733154, -112.046217

Related EPODs

Edmaier’s Secret Archive - Joshua Tree National Park
Yorkshire Limestone Pavement Cyclops Islands Marine Protected
Area The Stone Face of the Uinta Mountains Encore - Position of
the Setting Sun
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 23 weeks, 5 days, 16 hours, 5 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

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.


Mexican Hat

August 06, 2020

2010_Monument Valley_0001

Photographer: Marco Meniero
Summary Author: Marco Meniero

This curious geological formation, resembling a sombrero, is called the
Mexican Hat. It stands about 60 ft (18 m) high and is found just
outside of Monument Valley, Utah. Its precarious balance atop a
sandstone outcrop is certainly attention-getting. To find it, take
U.S. 163 to the settlement of Mexican Hat, a village taking its
name from the nearby rock formation. This area is a bit off the beaten
track but well worth a visit. Photo taken in April 2019.

Photo Details: Camera Canon EOS 5D Mark II; Software Adobe Photoshop
CS5 Windows; Exposure Time 0.0002s (1/6400); Aperture ƒ/4.5; ISO
equivalent 800; Focal Length 182.0mm.
* Mexican Hat, Utah Coordinates: 37.165, -109.865556

Related EPODs

Mexican Hat Sea Stacks off Aci Trezza, Italy Archive - More
Mesa Encore - Smoking Mountain Lava Lake Sass da Preja Buia
Archive - Concretions
More...

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 3 weeks, 15 hours, 25 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

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.


EPOD 20th - Anatahan Eruption of May 11

September 06, 2020

Anatahan Eruption of May 11

We’re celebrating 20 years of Earth Science Picture of the Day during
the month of September! Today’s photo features a popular EPOD from the
past. Thanks to all of our followers (on the blog, Facebook, Instagram
and Twitter) for supporting us. Thanks also to all of you who’ve
submitted your photos. We’re most appreciative. This EPOD was
originally published June 11, 2003.

Provided by: Allan Sauter, Scripps Oceanography
Summary author: Allan Sauter

The above photo was taken on the morning of May 11, 2003, and shows the
initial eruption of Mt. Anatahan (2,585 ft or 788 m above sea level) in
the Mariana Islands of the western Pacific Ocean. A team of scientists
from the University of Washington (St. Louis) and the Scripps Institute
of Oceanography installed a broadband seismic station on this island
(Anatahan) 5 days before the powerful eruption. We were sailing to
Saipan (south of Anatahan) when Mt. Anatahan erupted for the first time
in human memory. Fortunately, the few remaining islanders left Anatahan
in February -- their village was directly downwind of this plume.


Related EPODs

EPOD 20th - Anatahan Eruption of May 11 Reynisfjara Beach,
Iceland Color in Opals Encore - Folded Rock on the Portuguese
Vicentine Coast Archive - Goblin Valley State Park, Utah Encore
- Ghost Reef Fossil Find
More...

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 1 week, 5 days, 20 hours, 20 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

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 Twilight Sky

October 06, 2020

Altocumulus

Photographer: Bertrand Kulik
Summary Author: Bertrand Kulik

This amazing twilight sky was captured above Paris, France, on
August 24, 2020. The remarkable contrast between the cloudless sky and
the altocumulus clouds, imbued with tints of burgundy from the
Sun’s lingering rays, is representative of sharp boundary
conditions aloft.

Photo Details: Canon EOS 5D Mark III camera; TAMRON SP lens; 15-30 mm;
ƒ/6.3; 21.0 mm; ISO 400.
* Paris, France Coordinates: 48.8566, -2.3522

Related EPODs

Parisian Twilight Sky EPOD 20th - Mammatus Above Brookfield
EPOD 20th - Nacreous Clouds Above Antarctica EPOD 20th - Foggy
Start to the Day in Budapest, Hungary Encore - Morning Glory Over
Southeastern Brazil Altocumulus Formation
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 6 weeks, 20 hours, 26 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)