Blue Ice at Bay City

Bay City Blue Ice, photo by Great Lakes Drone Works

Great Lakes Drone Works captured some awesome shots from the ice on Saginaw Bay near Bay City. They write:

We made our way out to Bay City State Park to capture some images of these huge chunks of ice. At first we were hoping drone photos would be the way to go but after walking around and getting up close, it was clear that ground photography was the better option.
Blue ice occurs when weather conditions — such as a lack of high winds — allow water to freeze slowly and evenly, resulting in ice composed of large crystals (unlike snow, which is formed quickly and made up of small crystals).

When light hits these big ice crystals, it can travel deep into the structures (compare this to snow, wherein light hits a sharp edge and reflects off of it right away, resulting in blinding white). When the light travels deeper into slowly formed ice, some of the red wavelengths of sunlight — which is the longest wavelength of visible light — get absorbed into the ice structure.

The blue, which is the shortest wavelength of visible light, bounces back out, meet our eyes, and results in a deep aqua color.

Head over to their Facebook for more shots and get lots more icy goodness at the ice tag on Michigan in Pictures!

The Colors of Cold

Green Blue Ice, photo by Charles Bonham

Apparently Charles is my go-to photographer for ice colors as his picture was used for my post about what makes ice blue or green a couple years ago on Michigan in Pictures. Then as now, I went to The Causes of Color to answer the question: What causes the blue color that sometimes appears in snow and ice?

As with water, this color is caused by the absorption of both red and yellow light (leaving light at the blue end of the visible light spectrum). The absorption spectrum of ice is similar to that of water, except that hydrogen bonding causes all peaks to shift to lower energy – making the color greener. This effect is augmented by scattering within snow, which causes the light to travel an indirect path, providing more opportunity for absorption. From the surface, snow and ice present a uniformly white face. This is because almost all of the visible light striking the snow or ice surface is reflected back, without any preference for a single color within the visible spectrum.

The situation is different for light that is not reflected, but penetrates or is transmitted into the snow. As this light travels into the snow or ice, the ice grains scatter a large amount of light. If the light is to travel over any distance it must survive many such scattering events. In other words, it must keep scattering and not be absorbed. We usually see the light coming back from the near surface layers (less than 1 cm) after it has been scattered or bounced off other snow grains only a few times, and it still appears white.

In simplest of terms, think of the ice or snow layer as a filter. If it is only a centimeter thick, all the light makes it through; if it is a meter thick, mostly blue light makes it through. This is similar to the way coffee often appears light when poured, but much darker when it is in a cup.

Click through for lots more about light & color!

Charles took this photo last week on Sand Point near Munising. Check it out bigger and head over to his Flickr page for a bunch more great shots of winter in the Upper Peninsula!

More winter wallpaper and more amazing ice on Michigan in Pictures.

Ice locked

Icy Sunset, photo by Chris S

This is the time of year when I should be sharing pics of bold crocuses, baby birds & other springish things. This being Michigan, we are back to full-on winter!

Chris took this Sunday at the Mackinac Bridge. Head over to his Flickr for more photos of the Mighty Mac and stay warm!!

 

Candle Ice on Lake Michigan

Yesterday my photos and videos of an odd phenomenon on the Lake Michigan shore in Leelanau County got featured by Tanda Gimter on mLive who writes in part:

…some of the ice-crystal creations that suddenly appeared on a Leelanau County beach last weekend had photographers excited about their find – and a little baffled. The large, column-like crystals spread out on the ground like blooming flowers.

When you touched the hand-high columns, they broke apart easily.

“It was just kind of a weird day,” said Andrew McFarlane of Leland, who works in web development and marketing. He took pictures and a couple videos of the phenomenon while he was at Van’s Beach in Leland on Sunday. “I’ve never seen it before that I can remember.”

As regular readers know, I’m not one to let a Michigan mystery alone, and after some research I’m pretty confident that this is called “candle ice”. The American Meteorological Society defines it as: A form of rotten ice; disintegrating sea ice (or lake ice) consisting of ice prisms or cylinders oriented perpendicular to the original ice surface; these “ice fingers” may be equal in length to the thickness of the original ice before its disintegration.

Here’s a video of it!

Wearing o the Green (ice)

Icicles in cave – Grand Island Ice Curtains on Lake Superior, photo by Craig

Craig writes:

A little emerald green for St. Patrick’s Day!

Viewing this ice curtain from the inside at Grand Island near Munising Michigan, highlights the blue and teal hues that nature provides.

View the photo bigger and see more in Craig’s Grand Island Ice Curtains set.

Breaking up the band

Ice at the Mackinac Bridge, photo by Kent Babb

Winter’s grip on Michigan is slipping early all over including at the Straits of Mackinac.

View Kent’s photo background bigilicious and see more in his photostream on Flickr.

Lots more from the Mackinac Bridge on Michigan in Pictures!

 

Walking on Water, Michigan Style

Walking on Water, Michigan Style by Andrew McFarlane

Here’s a shot I took while standing on the amazingly clear ice on Lake Michigan’s Suttons Bay on last Saturday with my sweetheart! mLive liked it enough to share in their article about Grand Traverse Bay freezing over (Suttons Bay is a “sub-bay” of GT Bay – here’s a map):

“Back in the early to mid-1900s the bay froze 80-90% of the time,” said Heather Smith, Grand Traverse baykeeper for the center. “Around 1990, ice cover dropped to 20-30%.”

This winter is the eighth time Grand Traverse Bay has frozen over since 1990.

The frozen conditions likely extend far beyond Power Island, at least close to shore. Last weekend, ice boaters, ice fishermen and people walking their dogs flocked to the frozen surface of Suttons Bay for some winter fun.

Grand Traverse Bay is divided neatly by Old Mission Peninsula into its East Arm and its West Arm. Its East Arm runs north of Elk Rapids, while its West Arm includes the popular Power Island and extends to Suttons Bay.  From there, the bay curves around the Leelanau Peninsula where it merges with Lake Michigan.

Happy Valentines Day everyone!!