The Distribution of the Triplet Reflector in the Northwestern Gulf of Mexico as Observed on High-Resolution Subbottom Profiles
A regionally persistent sequence of closely spaced, parallel reflectors known as the Triplet was studied using high-resolution profile data and sediment core data collected throughout the slope of the Gulf of Mexico. When reflectors are regionally persistent, they may be of value for two reasons: th...
Main Author: | |
---|---|
Other Authors: | , , |
Format: | Thesis |
Language: | English |
Published: |
2020
|
Subjects: | |
Online Access: | https://hdl.handle.net/1969.1/188882 |
id |
fttexasamuniv:oai:oaktrust.library.tamu.edu:1969.1/188882 |
---|---|
record_format |
openpolar |
spelling |
fttexasamuniv:oai:oaktrust.library.tamu.edu:1969.1/188882 2024-05-19T07:42:13+00:00 The Distribution of the Triplet Reflector in the Northwestern Gulf of Mexico as Observed on High-Resolution Subbottom Profiles Stanley, Laura Lee Slowey, Niall Everett, Mark Young, Alan 2020-09-04T18:29:15Z application/pdf https://hdl.handle.net/1969.1/188882 en eng https://hdl.handle.net/1969.1/188882 High-Resolution Geophysics Gulf of Mexico Thesis text 2020 fttexasamuniv 2024-04-23T23:30:10Z A regionally persistent sequence of closely spaced, parallel reflectors known as the Triplet was studied using high-resolution profile data and sediment core data collected throughout the slope of the Gulf of Mexico. When reflectors are regionally persistent, they may be of value for two reasons: their distribution provides important clues about the nature of broad-scale environmental processes, and they can serve as reference horizons for both scientific and engineering applications. Sediments accumulating in the northwest Gulf of Mexico serve as an archive for glacial-interglacial changes in climatic and oceanographic conditions. Specifically, it is thought by other researchers that the Triplet marks a significant flux of terrigenous sediments into the Gulf of Mexico at the end of the last glaciation, which happened when glacial meltwater from the Laurentide Ice Sheet and associated Lake Agassiz flowed through the Mississippi River drainage. In this study, the occurrence and character of the Triplet was carefully documented using reflectors on high-resolution subbottom profiles collected during twenty-eight surveys of various locations across the continental slope. Analysis of this data was conducted using the IHS Kingdom seismic software platform, and sediment physical properties and radiocarbon ages from a previous study provided a means to ground truth the reflectors. Synthetic seismograms generated from sediment physical properties were quite similar to actual subbottom profiles, and synthetic seismograms corresponding to incrementally increasing sedimentation rates were compared to regional changes in actual reflector character. Results show the characteristics of the Triplet reflectors change with distance from the Mississippi River in ways that are consistent with it being the source sediment variations that produced the reflectors. Thesis Ice Sheet Texas A&M University Digital Repository |
institution |
Open Polar |
collection |
Texas A&M University Digital Repository |
op_collection_id |
fttexasamuniv |
language |
English |
topic |
High-Resolution Geophysics Gulf of Mexico |
spellingShingle |
High-Resolution Geophysics Gulf of Mexico Stanley, Laura Lee The Distribution of the Triplet Reflector in the Northwestern Gulf of Mexico as Observed on High-Resolution Subbottom Profiles |
topic_facet |
High-Resolution Geophysics Gulf of Mexico |
description |
A regionally persistent sequence of closely spaced, parallel reflectors known as the Triplet was studied using high-resolution profile data and sediment core data collected throughout the slope of the Gulf of Mexico. When reflectors are regionally persistent, they may be of value for two reasons: their distribution provides important clues about the nature of broad-scale environmental processes, and they can serve as reference horizons for both scientific and engineering applications. Sediments accumulating in the northwest Gulf of Mexico serve as an archive for glacial-interglacial changes in climatic and oceanographic conditions. Specifically, it is thought by other researchers that the Triplet marks a significant flux of terrigenous sediments into the Gulf of Mexico at the end of the last glaciation, which happened when glacial meltwater from the Laurentide Ice Sheet and associated Lake Agassiz flowed through the Mississippi River drainage. In this study, the occurrence and character of the Triplet was carefully documented using reflectors on high-resolution subbottom profiles collected during twenty-eight surveys of various locations across the continental slope. Analysis of this data was conducted using the IHS Kingdom seismic software platform, and sediment physical properties and radiocarbon ages from a previous study provided a means to ground truth the reflectors. Synthetic seismograms generated from sediment physical properties were quite similar to actual subbottom profiles, and synthetic seismograms corresponding to incrementally increasing sedimentation rates were compared to regional changes in actual reflector character. Results show the characteristics of the Triplet reflectors change with distance from the Mississippi River in ways that are consistent with it being the source sediment variations that produced the reflectors. |
author2 |
Slowey, Niall Everett, Mark Young, Alan |
format |
Thesis |
author |
Stanley, Laura Lee |
author_facet |
Stanley, Laura Lee |
author_sort |
Stanley, Laura Lee |
title |
The Distribution of the Triplet Reflector in the Northwestern Gulf of Mexico as Observed on High-Resolution Subbottom Profiles |
title_short |
The Distribution of the Triplet Reflector in the Northwestern Gulf of Mexico as Observed on High-Resolution Subbottom Profiles |
title_full |
The Distribution of the Triplet Reflector in the Northwestern Gulf of Mexico as Observed on High-Resolution Subbottom Profiles |
title_fullStr |
The Distribution of the Triplet Reflector in the Northwestern Gulf of Mexico as Observed on High-Resolution Subbottom Profiles |
title_full_unstemmed |
The Distribution of the Triplet Reflector in the Northwestern Gulf of Mexico as Observed on High-Resolution Subbottom Profiles |
title_sort |
distribution of the triplet reflector in the northwestern gulf of mexico as observed on high-resolution subbottom profiles |
publishDate |
2020 |
url |
https://hdl.handle.net/1969.1/188882 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
https://hdl.handle.net/1969.1/188882 |
_version_ |
1799481879928242176 |