April 27, 2018
January 31, 2018
If you’re a big fan (as I am) of the works of George Bernard Shaw, you may be disappointed in this post. This is what birders call a GBH: Great Blue Heron. This one was trolling the shallows for fish in South Lido Park.
Update On February 6, on the post titled Sleeping Turtles Preserve North, with Bog Lily, I made a confession that I’m now (February 14) copying here. “I have a strange confession to make concerning the blog post called GBH in SLP. On that post I intimated (because for some reason I have thought of George Bernard Shaw whenever I heard “GBH”) that “GBH” was how people referred to George Bernard Shaw. It isn’t! Obviously (even to me, now), George Bernard Shaw is “GBS”! I’m sorry if I confused any of you in my own confusion. I have no idea how that erroneous thought got lodged in my head. Thank my dear husband for setting me straight.” Arghhh.
January 1, 2018
December 28, 2017
September 29, 2017
The Back Pond at Schoepfle Garden has fascinated me for years. It’s where I have captured reflections of the surrounding woods in all seasons. This summer, however, the park people installed one of those terrible aerator rings, which shoots up water in a constant disruption of natural surface variations. When I visited last month, I was lucky enough to be there when the thing was turned off.
September 5, 2017
I may be confusing people. This is not my car, nor are the cars in any post with the title “A Car for Linda?” It is a photograph of a car (and a reflection) like photographs of cars that I take. Earlier photographs of cars that I posted—the ones, called “A Car for Ken”—were like photographs of cars that a fellow blogger named Ken takes. (Keep scrolling on his site; you’ll find some.) Ken avoids reflections in cars; I seek them.
September 4, 2017
September 3, 2017
(Ken doesn’t do reflections in cars, usually.)
March 29, 2017
On another part of Island Pond there was much more ice. . . . If you’ve wondered how ice becomes suspended above the water, as depicted in earlier posts, please see yesterday’s post.
March 28, 2017
Walking over Wildflower Hill from Rock Pond, I saw similar ice patterns on Island Pond.
UPDATE: If you’ve wondered how ice becomes suspended above the water, read below the photograph.
When I couldn’t figure out how ice becomes suspended above the water level, except for the obvious reason, I reached out to two physicists for enlightenment. One wrote back. Below is my question, and an answer from Dr. Chris Baird, who runs a website called Science Questions with Surprising Answers (sciencequestionswithsurprisinganswers.org). Turns out I should not have rejected the obvious reason (story of my life).
Hello, Chris Baird,
Last week I took several photographs around the edges of a nearby pond where ice had formed on twigs and trailing branches a few inches above the water. At first I thought that the ice had formed while the water level was higher, but somehow I don’t think that explains it. Then I wondered if light snow flakes fell on these sticks and branches and didn’t make it all the way to the water. Then they somehow transformed themselves from snow to ice. (Probably also a wrong answer.) Do you know how this happens?
While it’s hard to know for sure from 2D photos, I believe that your first notion is correct. The ice formed on the surface of the water while the water was at a higher level. The ice froze around the stems and became anchored to the stems. As the water level gradually dropped, ice patches away from the stems lowered with the water, staying in contact with the water, and thus melted away when the water warmed up. In contrast, the ice anchored to the stems stayed put when the water level lowered. They therefore lost contact with the water and did not melt when the water warmed up. This explanation is suggested by the disc shapes of the ice and the fact that these discs sit at levels that are good anchor points (i.e. the tips of stems, the junction points of stems, and the points in stems that have a crooked shape). These shapes are complex enough that there may have a been a complex series of events involving partial melting, refreezing, and repeated rising and lowering of the water level.
Snowfall is crystalline in nature and does not form solid chunks of transparent ice on stems. Freezing rain can form ice masses on stems, but it does not form disc shapes at only a few locations. Rather, freezing rains forms a thin layer of ice that coats the entire stem.
– Dr. Baird