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.


Wildfire Smoke Plume Over Eastern Idaho

September 09, 2021

Wildfire_near_St_Anthony

Photographer: Glenn McCreery

Summary Author: Glenn McCreery

On June 21, 2021 at approximately 5 PM Mountain Daylight Time (MDT) a
wildfire, the “ Black Knoll Fire”, started in an unpopulated
area approximately four miles northeast on the town of St. Anthony,
Idaho. The material burned was mostly grass, sagebrush, and
juniper. Organic matter burns at a lower temperature and produces a
lighter gray plume than the black, higher temperature, plume from
burning oil or a house fire. Such scenes are becoming more common now
that wildfire season has become longer and the fires more intense due
to climate change.
I photographed the fire at 7:43 PM MDT from Idaho State Highway 33, at
a distance of approximately 10 miles to the southeast of the fire. By
this time, the fire had grown to about 100 acres (40 hectares). The
fire continued to grow to approximately 433 acres (175 hectares)
before it was completely contained the next day. I calculate from the
camera image dimensions and focal length (105mm) and approximate
distance to the fire, that the plume reached a maximum height above the
ground of approximately 1 mile (1.6 km). The angle that the initial
plume makes compared with vertical is accounted for by an estimated 7
to 10 mile per hour (11 to 16 kph) wind blowing from the southwest,
although there are no nearby weather stations from which to check my
estimate.

Photo data: Canon 5D IV camera with Canon 24-105mm L lens at 105mm. ISO
200, f:8.0, 1/1000s. Minor adjustments in Photoshop CC.
* Newdale, Idaho Coordinates: 43.8849, -111.5389

Related EPODs

Wildfire Smoke Plume Over Eastern Idaho The Rio Grande Estuary
Spirit Lake in the Shadow of Mount St. Helens Journey to the
Center of the World Archive - Washington, D.C. from Space Lake
Tahoe: Blue Gem of the Sierra Nevada
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 6 days, 21 hours, 55 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.


Archive - Colorful Leaf Layers

October 09, 2021

6a0105371bb32c970b01bb0949160c970d

Every weekend we present a notable item from our archives.

This EPOD was originally published October 25, 2016.

October 2016 Viewer's Choice Photographer: Sylvie Pighini
Summary Authors: Sylvie Pighini; Jim Foster

Shown above is a European beech ( Fagus sylvatica) in
Schönbrunn Park, Vienna, Austria, surrounded by its recently shed
leaves, which here are differentiated by color. While it's not uncommon
for a tree to have leaves of two color hues, it's odd that the
different colors are so stratified. In general, deciduous trees in
Europe show less color in autumn than their North American or Asian
counterparts. Reds are rather rare and yellow or gold is the
predominant color. Geography plays a major role in why this is the
case.

The emerald green of the grass strip separating the newly fallen leaves
from the first fallen ones is perhaps the most eye-catching color. In
the foreground at top the still green leaves of a maple can be seen.
Photo taken on November 23, 2014.

Photo Details: Nikon D3000 camera; AF-S DX Zoom-Nikkor 18-55mm
lens; f/3.5-5.6 G ED II; ISO 200; 55mm; ƒ/5.6; 1/30 sec.
exposure; Retouched using Lightroom.
* Schönbrunn Park, Austria Coordinates: 48.184516, 16.311865


Related EPODs

Archive - Colorful Leaf Layers Archive - Monarch Butterfly and
Chrysalis Four Seasons of Wisteria White-mouth Dayflower in
Bloom The Corn Lily: Toxic Beauty of the North American West
Miniscule Mushrooms in Washington
More...

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 5 weeks, 1 day, 21 hours, 55 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.


Spider Web Refraction

November 09, 2021

IMG_0844a dusted color refraction Cr WEB(1)

Photographer: Patricia Rasmussen

Summary Author: Patricia Rasmussen; Cadan Cummings

The photo above shows a cropped portion of a spider web image taken
using a technique called intentional camera movement (ICM). As I
was going through my third round of ICM spider web images, this photo
was marked for deletion until I enlarged the image and spotted the
spectacular bands of color. Without the magnifying and cropping
effects, the color bands are barely detectable. Taken in the early
morning, the sunrise combined with moist air from the fog and dew
presumably caused refraction to occur in the photo revealing these
unique color bands. This effect could have also been intensified due to
the use of a cropped sensor camera.

Photo data: ICM with General Post-Processing Edits; Canon EOS 90D, 100
mm lens, f/9, 1/3 second exposure, ISO 100, photo taken on September 1,
2021 at 6:50 a.m. CDT.
* Eagle River, Wisconsin Coordinates: 45.9172, -89.2443

Related EPODs

Spider Web Refraction Double Rainbow over Freital, Germany
Archive - Jack-O'-Lantern Sun Beautiful Mountain Shadow in
Western Italy Lunar Corona Above the Rocca del Brunelleschi
Lunar Crepuscular Rays in Italy
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 9 weeks, 4 days, 22 hours, 55 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.


Cumbre Vieja Eruption Column

December 09, 2021

PSX_20211006_210648

Photographer: Pedro José Luengo Ramírez

Summary Author: Pedro José Luengo Ramírez; Cadan Cummings

Featured above is a photograph of an eruption column produced by
the volcano in the Cumbre Vieja mountain range on the island of
La Palma, Canary Islands. This picture was taken on October 6,
2021, approximately two and a half weeks after the volcano began
erupting. The vantage point was from the Roque de Los Muchachos,
which is located about 10 miles (17 km) away from the eruption and at
an altitude of 8,000 ft (2,426 m). This specific series of eruptions
was unique because the eruption column encountered a temperature
inversion at around 3 miles (5 km) altitude, which effectively forced
the ash to disperse horizontally instead of vertically. Viewed from
above several days prior by the Moderate Resolution Imaging
Spectroradiometer (MODIS) satellite, the column appeared as a
series of concentric rings or a bulls-eye.
* Roque de Los Muchachos, La Palma, Canary Islands, Spain
Coordinates: 28.754, -17.885

Related EPODs

Cumbre Vieja Eruption Column Archive - Amboseli National Park,
Kenya Quebrada de las Conchas Nature Reserve Geology of
Badlands National Park Vortex Clouds Around Mount Etna Rock
Glacier in Colorado Rockies
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 4 days, 20 hours, 43 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)