03

Landscapes of Japan, 03, Incised valley and upland terrace, Tanohata.

Incised valley and upland terrace, Tanohata

Incised valley and upland terrace, Tanohata. -- If stream erosion and lowering of a land surface exceeds the rate of uplift of that surface, topographic relief decreases. This reduces stream gradients and velocity and causes streams to begin shifting laterally creating floodplains and eventually broad, nearly flat surfaces. If uplift is subsequently renewed, relief and stream gradients to the sea increase, causing the streams to erode downward once again. This can produce stream valleys incised into remnant terraces of the old flat surface, as seen here. -- Similar topographic features are produced when flat, wave-eroded surfaces along a coastline are uplifted and then cut into by downcutting streams flowing to the new, lower shoreline.
 
Editorial assistant: Joseph Augustin. Collection librarian: Amy Bryant. Please send any questions, comments, or content corrections to Michael Thiedeman, Professor of Art, Earlham College, Richmond, IN 47374 USA. email address: thiedmi@earlham.edu -- For specific reference to the images in the Landscapes of Japan set, you are invited to contacted Dr. Charles Martin, Professor Emeritus, Dept. of Geology, Earlham College, email address: martich@earlham.edu