Options
Sediment samples from the weser estuary - lab generated time dependend density profiles and lutocline evolution
Citation Link: https://doi.org/10.15480/882.5960
Type
Experimental Data
Version
1.0
Date Issued
2023-07-13
Creator
Data Curator
Data Collector
Contact
Other Contributor
Other Contributor
Language
English
Abstract
As part of the FAUST project, both field and laboratory investigations were conducted on the sediment exchange behavior of cohesive sediments in the Weser estuary. A particular focus of the work was the examination of vertical exchange processes at the interface between the water column and highly concentrated suspensions. Since the transitions between the sub-processes of sediment exchange are partially fluid or directly connected, investigations were carried out not only on the predominant aspects of settling and erosion behavior but also on consolidation behavior and rheology of cohesive sediments.
The methodology to generate the density profiles is described in the corresponding publication, where the results were published and discussed first hand (https://doi.org/10.3389/feart.2022.916056). In general, an Anton Paar DMA Standard Densimeter has been used to measure the suspensions densities. For very high (approx. >1300 kg/m³) densities a suspension balance has been used as alternative. Lutocline evolution curves are generated by digitization of photographic observations of the lutoclines evolution over time.
Information on the composition (approximate fractions of sand, silt and clay) of the sediments used is also given in https://doi.org/10.3389/feart.2022.916056.
Data abbreviations are location based: BB - Blexer Bogen, NH - Nordenham, H - Harbour, S - Ship, L - Laboratory, MW - Measurementtrip Weser; Numbers are sample and field trip specific.
Natural profiles:
e.g. MW-II, NH-13H: Sample number 3 from the second field trip (first 0, second 1,...) on the Weser (MW-II) collected at Position Nordenham. Density profile generated immediately after returning in the harbour (H).
Lab generated development of density-depth-profiles:
e.g. BB-05 rho_0 = 1065 kg/m³: Sample number 5 from the first field trip on the Weser collected at Position Blexer Bogen having an initially homogeneous density profile of rho_0 = 1065 kg/m³
The methodology to generate the density profiles is described in the corresponding publication, where the results were published and discussed first hand (https://doi.org/10.3389/feart.2022.916056). In general, an Anton Paar DMA Standard Densimeter has been used to measure the suspensions densities. For very high (approx. >1300 kg/m³) densities a suspension balance has been used as alternative. Lutocline evolution curves are generated by digitization of photographic observations of the lutoclines evolution over time.
Information on the composition (approximate fractions of sand, silt and clay) of the sediments used is also given in https://doi.org/10.3389/feart.2022.916056.
Data abbreviations are location based: BB - Blexer Bogen, NH - Nordenham, H - Harbour, S - Ship, L - Laboratory, MW - Measurementtrip Weser; Numbers are sample and field trip specific.
Natural profiles:
e.g. MW-II, NH-13H: Sample number 3 from the second field trip (first 0, second 1,...) on the Weser (MW-II) collected at Position Nordenham. Density profile generated immediately after returning in the harbour (H).
Lab generated development of density-depth-profiles:
e.g. BB-05 rho_0 = 1065 kg/m³: Sample number 5 from the first field trip on the Weser collected at Position Blexer Bogen having an initially homogeneous density profile of rho_0 = 1065 kg/m³
Subjects
cohesive sediment
consolidation
Weser
sediment sampling
lutocline
settling
DDC Class
624: Civil Engineering, Environmental Engineering
Funding Organisations
Bundesanstalt für Wasserbau
More Funding Information
Being part of the research project FAUST (for an improved understanding of estuarine sediment transport), this study was supported with funding from the Federal Waterways Engineering and Research Institute Germany (BAW) and with support from the Federal Waterways and Shipping Administration (WSA Jade-Weser-Nordsee) by providing ship capacities and employees.