GPP

The Sumida River has become a big mirror!

What! The arch of Eitai Bridge is reflected upside down on the river surface.
The Sumida River has become a mirror!

If this is a quiet pond in the garden, it is not uncommon to see Arched bridge upside down on the surface of the water.

However, there is a flow here in the Sumida River, and many ships are coming and going, so the river surface is wavy.
Therefore, there is no sight where the arch of the bridge is clearly reflected upside down to the river surface. I saw it for the first time.

How did you come across this scene?

As a guess, I think that the Sumida River has become a mirror because these four conditions were met.

Condition 1: Windless
Condition 2: Balance between the flow of the tide and the flow of the river
Condition 3: There are no boats to come and go.
Condition 4: Sunny weather

Condition 1: Windless

Condition 1: Windless Sumida River has become a big mirror!

[Photo on the right]: The river surface where the wind blows and ripples rise.

Even if a little wind blows, ripples rise on the river surface.

(The wind passing through the river is pleasant, but dare) you should aim for a moment when there is no wind.

Condition 2: Balance between the flow of the tide and the flow of the river

Condition 2: Balance between the ebb and flow of the tide and the flow of the river Sumida River has become a big mirror!

[Photo on the right]: Backflow during periods close to high tide] ※Shooting on another day

Near the mouth of the Sumida River, it is also affected by the ebb and flow of the tide.

The river originally flows from upstream to downstream.
However, at times close to high tide, the river seems to flow backward.

So this time, I guess that the tide and the flow of the river were balanced moderately, and the river surface looked flat like a mirror. I thought it was a rare sight.

➡It should capture the time zone when the flow of the river stops sharply.

Condition 3: There are no boats to come and go.

Condition 3: The Sumida River, which has no boats to come and go, has become a big mirror!

[Photo on the right]: The wave after the boat has passed.

After the ship passes, a "switch wave" is born on the surface of the river.
This draw wave reflects on the shore and creates more waves in multiple layers.
The waves made of reflection are hard to fit.

I love the scenery of working ships, such as carriers, pleasure boats, and guard boats, traveling around the Sumida River. Until now, it was like going to see a boat to Sumida River.
However, unless you avoid the time of the ship coming and going, you will not have been able to encounter the Sumida River, which reflects like a mirror.

(I love ships, but dare) I should aim for a time when the ship doesn't pass.

Condition 4: Sunny weather

Condition 4: The fine weather Sumida River has become a big mirror!

[Photo on the right]: Cloudy weather ※Shooting on another day

It is desirable to have a sunny day with a lot of light. The outline of the structure reflected upside down on the river surface is clear.

➡You should aim for a sunny day.

#mirror_river #arched_bridge #Eitai Bridge #Mirror