Coastal changes, eastern Lake Michigan, 1970-1974 PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Coastal changes, eastern Lake Michigan, 1970-1974 PDF full book. Access full book title Coastal changes, eastern Lake Michigan, 1970-1974 by Coastal Engineering Research Center (U. S.). Download full books in PDF and EPUB format.
Author: Coastal Engineering Research Center (U. S.)
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Coastal Engineering Research Center (U. S.)
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: William A. Birkemeier
Publisher: Forgotten Books
ISBN: 9780364119112
Category : Science
Languages : en
Pages : 98
Get Book Here
Book Description
Excerpt from Coastal Changes, Eastern Lake Michigan, 1970-74 The author acknowledges the assistance of many individuals in collecting, editing, and analyzing the data. The first 3 years of data (august 1970 to July 1973) was collected under contract by Dr. R.a. Davis and graduate students of Western Michigan University. The final period of data (october 1973 to December 1974) was collected by E. Tompkins and a surveying party from Army Engineer District, Detroit. Their efforts are commendable because of the difficulty involved in monthly surveying of the complex and steep terrain which borders Lake Michigan. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: William Allen Birkemeier
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 96
Get Book Here
Book Description
Author: William Allen Birkemeier
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 96
Get Book Here
Book Description
Author: William A. Birkemeier
Publisher:
ISBN:
Category :
Languages : en
Pages : 91
Get Book Here
Book Description
Bluff recession and volumetric losses at 17 profile lines along the eastern shore of Lake Michigan were measured monthly from August 1970 to December 1974. Average rate of bluff recession for the period equaled 2.5 meters per year per profile line with an average loss of 4.2 meters per year on the most severely eroded line. Bluff recession tended to increase with lake level but the seasonal peak in recession coincided with the storm period (September to April). Peak recession occurred before ice buildup (between November and December) and just after ice breakup (in the spring, March to April). Lake ice was found to be an effective shore protection agent during the stormiest months of January, February, and March. Till and mixed till bluffs tended to erode less than bluffs composed of sand, but no clear dependence on bluff composition was found. An analysis of the content and median sand size of 519 sediment samples collected from both the foreshore and the backshore during the final 15 months of surveying shows that backshore sediments are generally finer and more uniform than foreshore sediments. High and low concentrations of gravel, usually found on the foreshore, were characteristic of specific profile lines. Deposits of heavy minerals, predominantly magnetite, were usually found on the backshore. (Author).
Author: Richard A. Davis (Jr.)
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 64
Get Book Here
Book Description
Author: Richard A. Davis
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
Get Book Here
Book Description
Author: Richard A. Davis (Jr.)
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 72
Get Book Here
Book Description
Author: Richard Albert Davis
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 106
Get Book Here
Book Description
Author: Richard A Davis (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
Get Book Here
Book Description
This study concerns erosion of the bluff or edge of the terrace marking the landward boundary of the beach at 17 sites along a 250-mile segment of the east coast of Lake Michigan. Data were collected every 4 weeks for 3 years beginning in August 1970, during a period when monthly lake levels in Lake Michigan rose about 1.5 feet to record levels in the spring and summer 1973. Bluff or terrace erosion was intermittent during the first 2 years, but universal during the final year, suggesting a critical lake level of about 580.0 feet, International Great Lakes datum, above which erosion on this coast generally occurs everywhere. For the 3-year period, net bluff erosion varied from 1 cu yd/ft of beach front at two sites to a maximum loss of 39 cu yd/ft at the site on Big Sable Point. Erosion within the study area was intermittent over time periods equal to the survey interval (4 weeks), and local compared to distances between sites (about 15 miles). An aerial photo study of these sites from 1938 to 1972 showed that long-term erosion is closely tied to lake level, and that sand terraces form rapidly in the backshore during periods of low water. Beach sediments appear to be locally derived and sand size does not show a clear relationship to the slope of the beach face.
