Analyse von Bathymetrie und akustischer Rückstreuung verschiedener Fächersonar- und Sedimentecholot-Systeme zur Charakterisierung und Klassifizierung des Meeresbodens am Gakkel-Rücken, Arktischer Ozean
The thesis describes the acquisition, cleaning and visualisation of multibeam data which were collected on RV Polarstern and USCGC Healy during the Arctic Mid-Ocean-Ridge Expedition (AMORE) 2001. The data sets are combined in a high-resolution digital terrain model and a bathymetric chart of the Gak...
Main Author: | |
---|---|
Other Authors: | , |
Format: | Doctoral or Postdoctoral Thesis |
Language: | German |
Published: |
Universität Bremen
2009
|
Subjects: | |
Online Access: | https://media.suub.uni-bremen.de/handle/elib/2653 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000114291 |
id |
ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/2653 |
---|---|
record_format |
openpolar |
spelling |
ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/2653 2023-05-15T14:54:13+02:00 Analyse von Bathymetrie und akustischer Rückstreuung verschiedener Fächersonar- und Sedimentecholot-Systeme zur Charakterisierung und Klassifizierung des Meeresbodens am Gakkel-Rücken, Arktischer Ozean Analysis of bathymetry and acoustic backscatter from different multibeam sonar and sediment echosounder systems for the characterisation and classification of the seafloor at the Gakkel Ridge, Arctic Ocean Hatzky, Jörn Miller, Heinrich Spieß, Volkhard 2009-04-02 application/pdf https://media.suub.uni-bremen.de/handle/elib/2653 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000114291 ger ger Universität Bremen FB5 Geowissenschaften https://media.suub.uni-bremen.de/handle/elib/2653 urn:nbn:de:gbv:46-diss000114291 info:eu-repo/semantics/openAccess hydroacoustics multibeam sonar sediment echosounder bathymetry backscatter seafloor classification Gakkel Ridge Arctic Ocean 550 550 Earth sciences and geology ddc:550 Dissertation doctoralThesis 2009 ftsubbremen 2022-11-09T07:09:51Z The thesis describes the acquisition, cleaning and visualisation of multibeam data which were collected on RV Polarstern and USCGC Healy during the Arctic Mid-Ocean-Ridge Expedition (AMORE) 2001. The data sets are combined in a high-resolution digital terrain model and a bathymetric chart of the Gakkel Ridge (8W-88E, 82N-87N). In order to process acoustic backscatter from two different sonar systems, Hydrosweep DS-2 and Seabeam 2112, an extensive software package was developed. The angle-normalised and beam pattern corrected backscatter values are compared in five areas. The variation of the backscatter strength is analysed over different rock types, sediment cores and seismogram sections that were measured by the sediment echosounder Parasound. Using angle-invariant backscatter data the Gakkel Ridge is classified in a Western Volcanic Zone (WVZ), a Sparsely Magmatic Zone (SMZ) and an Eastern Volcanic Zone (EVZ). While the basaltic WVZ and EVZ show high backscatter values the backscattering in the SMZ, consisting of mainly peridotites, is rather low. The result of the classification is verified by a second procedure in selected clusters. Doctoral or Postdoctoral Thesis Arctic Arctic Ocean Arktis* Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Arctic Arctic Ocean Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
German |
topic |
hydroacoustics multibeam sonar sediment echosounder bathymetry backscatter seafloor classification Gakkel Ridge Arctic Ocean 550 550 Earth sciences and geology ddc:550 |
spellingShingle |
hydroacoustics multibeam sonar sediment echosounder bathymetry backscatter seafloor classification Gakkel Ridge Arctic Ocean 550 550 Earth sciences and geology ddc:550 Hatzky, Jörn Analyse von Bathymetrie und akustischer Rückstreuung verschiedener Fächersonar- und Sedimentecholot-Systeme zur Charakterisierung und Klassifizierung des Meeresbodens am Gakkel-Rücken, Arktischer Ozean |
topic_facet |
hydroacoustics multibeam sonar sediment echosounder bathymetry backscatter seafloor classification Gakkel Ridge Arctic Ocean 550 550 Earth sciences and geology ddc:550 |
description |
The thesis describes the acquisition, cleaning and visualisation of multibeam data which were collected on RV Polarstern and USCGC Healy during the Arctic Mid-Ocean-Ridge Expedition (AMORE) 2001. The data sets are combined in a high-resolution digital terrain model and a bathymetric chart of the Gakkel Ridge (8W-88E, 82N-87N). In order to process acoustic backscatter from two different sonar systems, Hydrosweep DS-2 and Seabeam 2112, an extensive software package was developed. The angle-normalised and beam pattern corrected backscatter values are compared in five areas. The variation of the backscatter strength is analysed over different rock types, sediment cores and seismogram sections that were measured by the sediment echosounder Parasound. Using angle-invariant backscatter data the Gakkel Ridge is classified in a Western Volcanic Zone (WVZ), a Sparsely Magmatic Zone (SMZ) and an Eastern Volcanic Zone (EVZ). While the basaltic WVZ and EVZ show high backscatter values the backscattering in the SMZ, consisting of mainly peridotites, is rather low. The result of the classification is verified by a second procedure in selected clusters. |
author2 |
Miller, Heinrich Spieß, Volkhard |
format |
Doctoral or Postdoctoral Thesis |
author |
Hatzky, Jörn |
author_facet |
Hatzky, Jörn |
author_sort |
Hatzky, Jörn |
title |
Analyse von Bathymetrie und akustischer Rückstreuung verschiedener Fächersonar- und Sedimentecholot-Systeme zur Charakterisierung und Klassifizierung des Meeresbodens am Gakkel-Rücken, Arktischer Ozean |
title_short |
Analyse von Bathymetrie und akustischer Rückstreuung verschiedener Fächersonar- und Sedimentecholot-Systeme zur Charakterisierung und Klassifizierung des Meeresbodens am Gakkel-Rücken, Arktischer Ozean |
title_full |
Analyse von Bathymetrie und akustischer Rückstreuung verschiedener Fächersonar- und Sedimentecholot-Systeme zur Charakterisierung und Klassifizierung des Meeresbodens am Gakkel-Rücken, Arktischer Ozean |
title_fullStr |
Analyse von Bathymetrie und akustischer Rückstreuung verschiedener Fächersonar- und Sedimentecholot-Systeme zur Charakterisierung und Klassifizierung des Meeresbodens am Gakkel-Rücken, Arktischer Ozean |
title_full_unstemmed |
Analyse von Bathymetrie und akustischer Rückstreuung verschiedener Fächersonar- und Sedimentecholot-Systeme zur Charakterisierung und Klassifizierung des Meeresbodens am Gakkel-Rücken, Arktischer Ozean |
title_sort |
analyse von bathymetrie und akustischer rückstreuung verschiedener fächersonar- und sedimentecholot-systeme zur charakterisierung und klassifizierung des meeresbodens am gakkel-rücken, arktischer ozean |
publisher |
Universität Bremen |
publishDate |
2009 |
url |
https://media.suub.uni-bremen.de/handle/elib/2653 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000114291 |
long_lat |
ENVELOPE(90.000,90.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Gakkel Ridge |
geographic_facet |
Arctic Arctic Ocean Gakkel Ridge |
genre |
Arctic Arctic Ocean Arktis* |
genre_facet |
Arctic Arctic Ocean Arktis* |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/2653 urn:nbn:de:gbv:46-diss000114291 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766325950259134464 |