Geography 4400/ Physical Hydrology—Lecture 1
-What is the seasonality? How does water storage occur? Is water stored in a short term
storage or long term storage?
-How do events impact water depth?
-We also have human interference
-Physical hydrology is concerned with the quality of water, as well as seasonality and how it is
impacted by natural events.
Ex: Eastwind Lake, some of the water goes up from one pond to another area
-Natural events of hurricanes
-How do humans interfere with water?
-We are interested in water
Inputs-Outputs=Change in storage
The theoretical framework of this is the water balance equation
-Water is unevenly distributed in time and space, and it moves at various speeds
-Water is stored above and below the Earth’s surface.
-One form of water may change into another form. Ie rainfall-grounwater-streamflow
-Precipitation is the primary source of water that reaches the Earth’s surface
-Evap is a major source of water loss
-Water as a substance: structure vs physical properties
-Forces acting on water cause it to move through the hydrologic cycle
-Physical properties of water determine the qualitative and quantitative forces of water
-Physical properties and interactions with environment lead to atomic and molecular structure.
Hydrogen bonds are connected to oxygen. These covalent bonds that form are very strong, and
a lot of energy is needed to break them.
-The angle is about 105 deg between the two Hs. H2 atoms are one-sided positive charge and
other side neg charge Attractive forces
-+ve end and –ve end
-hydrogen bonds have high melting and boiling temps
-Water exists in 1)solid 2)liquid 3)gas
-When temperatures are less than zero degrees, we get a crystal latti