Show simple item record

dc.contributor.advisorSingha, Kamini
dc.contributor.authorMalenda, Helen Fitzgerald
dc.date.accessioned2018-02-27T20:52:02Z
dc.date.accessioned2022-02-03T13:10:38Z
dc.date.available2018-02-27T20:52:02Z
dc.date.available2022-02-03T13:10:38Z
dc.date.issued2018
dc.identifierMalenda_mines_0052N_11438.pdf
dc.identifierT 8439
dc.identifier.urihttps://hdl.handle.net/11124/172150
dc.descriptionIncludes bibliographical references.
dc.description2018 Spring.
dc.description.abstractFloodplain stratigraphy, a major structural element of alluvial aquifers, is a fundamental component of floodplain heterogeneity, hydraulic conductivity, and connectivity. Watershed-scale hydrological models often simplify floodplains by modeling them as largely homogeneous, which inherently overlooks natural floodplain heterogeneity and anisotropy and their effects on hydrologic processes such as groundwater flow and transport and hyporheic exchange. This study, conducted in the East River Basin, Colorado, USA, combines point-, meander-, and floodplain-scale data to explore the importance of detailed field studies and physical representation of alluvial aquifers. We combine sediment core descriptions, hydraulic conductivity estimates from slug tests, ground-penetrating radar (GPR), historical maps of former channels, LiDAR-based elevation and Normalized Difference Vegetation Index data to infer 3-D fluvial stratigraphy. We compare and contrast stratigraphy of two meanders with disparate geometries to explore floodplain heterogeneity and connectivity controls on flow and transport. We identify buried point bars, former channels, and overbank deposits using GPR, corroborated by point sediment descriptions collected during piezometer installment and remotely sensed products. We map heterogeneous structural features that should control resultant flow and transport; orientation and connectivity of these features would control residence times important in hydrologic models.
dc.format.mediumborn digital
dc.format.mediummasters theses
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.relation.ispartof2018 - Mines Theses & Dissertations
dc.rightsCopyright of the original work is retained by the author.
dc.subjecthydrofacies mapping
dc.subjectfluvial sedimentology
dc.subjectremote sensing
dc.titleFrom grain to floodplain: evaluating heterogeneity of floodplain hydrostratigraphy using sedimentology, geophysics, and remote sensing
dc.typeText
dc.contributor.committeememberRowland, Joel
dc.contributor.committeememberNavarre-Sitchler, Alexis K.
thesis.degree.nameMaster of Science (M.S.)
thesis.degree.levelMasters
thesis.degree.disciplineGeology and Geological Engineering
thesis.degree.grantorColorado School of Mines


Files in this item

Thumbnail
Name:
Malenda_mines_0052N_11438.pdf
Size:
4.522Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record