13

Environmental Implications of Japan's Geology 13, Tsunami wall, Hiraiga.
Tsunami wall, Hiraiga. -- Tsunami are large waves caused by vertical displacement of sea water, usually resulting from submarine earthquakes. Destruction results when these waves wash over a shoreline. Their effects are greatest along irregular coastlines with bays that are broaden towards the ocean and narrow inland, such as the Pacific coast of Honshu. Japanese coasts have been affected by at least 72 tsunami in the last hundred years, and inundation heights up to 100 feet are not uncommon. -- Here a concrete wall has been erected in an attempt to protect the small fishing village of Hiraiga from at least small tsunami.
 
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 -- With reference to this set of images dealing with the geology of Japan, you may wish to contact Dr. Charles Martin, Professor Emeritus, Department of Geology, Earlham College, email: martich@earlham.edu