The Meaning of the Picture

My research fields are hydrology and water resources, so this picture looks like suggesting water cycle or something, but actually, this picture shows my full name.

Please reffer to the Japanese version of my card.
My family name, Kawamura is written by two Chinese characters or Kanji.
Each Chinese character has its meaning. The first character pronounced as "Kawa" means river. The second character pronounced as "Mura" means village.
My first name Akira is expressed as the third character.
The character pronounced "Akira" consists of two Chinese characters.
Left-hand side character indicates Sun, and right-hand side indicates crescent moon,
which are both created as pictograph from their appearance.

As the result, my name means River Village, Sun and Moon, which made me inborn hydrologist.