A sample of bottom sediments taken with a Shipek-sampler |
A core (1 m length) taken by a diver in the Guayas Estuary |
During field campaigns, suspended sediment samples, bottom sediment samples and cores are taken and subjected to non-destructive (only in the case of cores) and destructive analysis.
A sample of bottom sediments taken with a Shipek-sampler |
A core (1 m length) taken by a diver in the Guayas Estuary |
Non-destructive analysis comprises radiography and gamma-densitometry
Radiograph from core Dark regions are fine cohesive sediments, while light layers are coarser, sandy sediments. |
Gamma-log |
Afterwards the core is opened and after a visual inspection destructive analysis are performed. Suspended sediments and bottom sediments (bulk samples) are always submitted to destructive analysis immediately.
ESEM photo of bottom sediments showing flocs and diatoms |
Grain size spectrum of suspended sediments |
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