Understanding Formation and Evolution of Dune Fields by Spatial Mapping and Analysis: Upper Muskegon River Valley, Michigan
| Main Author: | |
|---|---|
| Language: | English |
| Published: |
Bowling Green State University / OhioLINK
2019
|
| Subjects: | |
| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1557841176226706 |
| id |
ndltd-OhioLink-oai-etd.ohiolink.edu-bgsu1557841176226706 |
|---|---|
| record_format |
oai_dc |
| spelling |
ndltd-OhioLink-oai-etd.ohiolink.edu-bgsu15578411762267062021-08-03T07:11:12Z Understanding Formation and Evolution of Dune Fields by Spatial Mapping and Analysis: Upper Muskegon River Valley, Michigan O'Malley, Paul W. Geology Geomorphology Paleoclimate Science dunes inland dune fields Younger Dryas Great Lakes wind regimes GIS Rosco Dune Field Michigan glaciolacustrine spatial mapping The morphology of vegetation-stabilized parabolic dunes has been seen as a source ofclimate information from their periods of stabilization. Several dune fields in the upperMuskegon River Valley in central Michigan, including fields not previously described in theliterature, were mapped using Geographic Information System (GIS) based techniques. Themapping used terrain analyses, derived from a digital elevation model (DEM) and a LightDetection and Ranging (LiDAR) based terrain model in tandem with semi-automated basedextraction followed by manual refinement of delineation and visualization techniques (VT).Terrain parameters and VT also guided digitization of dune crestlines. The morphology of themapped dunes was characterized in terms of slope and aspect relationships, and comparisonswere evaluated. Directional statistics were used to describe crestline orientations and circularvariance. The morphology of these dune fields likely reflects a climate having an unequalbimodal wind regime, the dominant regime being northwesterly and the secondary regime beingsoutherly or southwesterly. Based on visual interpretations, the location of downwind, compoundparabolic forms are linked to locations likely to have had shallow groundwater, or to possiblysuitable locations for parkland that could have induced precipitation ridges marking downwinddune field margins. Elongated dune forms are linked to rising terrain. Exploratory data analysis(EDA), primarily based on slope and aspect correlations, revealed a strongly asymmetricdistribution in slopes of the fields, indicating the potential that a bimodal wind regime waspresent when the dunes stabilized. Cross-cutting relationships between dunes and terraces of theMuskegon River were observed which place formation of the dunes before the formation ofpaleo-meanders by a forerunner to that stream. The planform and distribution of the dunes in thedune fields also appear closely tied to the changing groundwater availability. 2019-08-09 English text Bowling Green State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1557841176226706 http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1557841176226706 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Geology Geomorphology Paleoclimate Science dunes inland dune fields Younger Dryas Great Lakes wind regimes GIS Rosco Dune Field Michigan glaciolacustrine spatial mapping |
| spellingShingle |
Geology Geomorphology Paleoclimate Science dunes inland dune fields Younger Dryas Great Lakes wind regimes GIS Rosco Dune Field Michigan glaciolacustrine spatial mapping O'Malley, Paul W. Understanding Formation and Evolution of Dune Fields by Spatial Mapping and Analysis: Upper Muskegon River Valley, Michigan |
| author |
O'Malley, Paul W. |
| author_facet |
O'Malley, Paul W. |
| author_sort |
O'Malley, Paul W. |
| title |
Understanding Formation and Evolution of Dune Fields by Spatial Mapping and Analysis: Upper Muskegon River Valley, Michigan |
| title_short |
Understanding Formation and Evolution of Dune Fields by Spatial Mapping and Analysis: Upper Muskegon River Valley, Michigan |
| title_full |
Understanding Formation and Evolution of Dune Fields by Spatial Mapping and Analysis: Upper Muskegon River Valley, Michigan |
| title_fullStr |
Understanding Formation and Evolution of Dune Fields by Spatial Mapping and Analysis: Upper Muskegon River Valley, Michigan |
| title_full_unstemmed |
Understanding Formation and Evolution of Dune Fields by Spatial Mapping and Analysis: Upper Muskegon River Valley, Michigan |
| title_sort |
understanding formation and evolution of dune fields by spatial mapping and analysis: upper muskegon river valley, michigan |
| publisher |
Bowling Green State University / OhioLINK |
| publishDate |
2019 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1557841176226706 |
| work_keys_str_mv |
AT omalleypaulw understandingformationandevolutionofdunefieldsbyspatialmappingandanalysisuppermuskegonrivervalleymichigan |
| _version_ |
1719455556098326528 |