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Topics - Karin

#1
Hi Jonathan,

For our study in south-east QLD, Australia, we have access to field data for both accretion rates and for surface elevation changes (i.e. accretion minus subsidence caused by e.g. soil compaction). The two values differ a lot, especially for saltmarsh which has an accretion rate of ca 2 mm/year but a negative surface elevation change (relative to a fixed subsurface benchmark).

Do you think it would be better to use the values for surface elevation change than the pure accretion values when running SLAMM?

Thanks,
Karin   
#2
Model Formulation & Parameters / Overwash
June 06, 2010, 08:49:45 PM
Hi again,

We also have two questions about the overwash parameters, and I thought I'd put them into a separate topic:

(1) Frequency Overwash: Should this be given as a number of years - e.g. if overwash happens every 50 years, should I put 1/50 or 50?

(2) Marsh and Mangrove Percent Loss: Is the presumed cause for this loss (due to sand transport) that marsh/mangrove suffocates as it gets covered by sand, or is it erosion due to loss of sand/soil?

Thanks again,

Karin
#3
Hi,

We are using SLAMM for a research project in south east Australia, and have two questions relating to the accretion model in v6.0.1:

(1) Turbidity Maximum Zone: It says a range of salinity should be specified - should this really be e.g. a lower limit above which there is some salinity effect (e.g. 15 ppt), or should it be given as a range (e.g. 15-35 ppt)?

(2) "S" Non Turbidity Maximum (unitless): In the description it says "Accretion limitation factor in region where there is no salinity effect". My colleagues and I have a hard time understanding what this really means? Is it always 0 or 1 or can it have any value?

Thanks a lot in advance,

Karin