View source for Characteristic Numbers of Suspended Sediment Concentration (independent of tides)

[[de: Tideunabhängige Kennwerte des Schwebstoffgehalts]]
[[category:Characteristic Numbers (independent of the presence of tides)]]
A graphic sketch for the definition of the various tidal characteristic numbers of [[suspended sediment concentration]] is not available. Due to the fact that they are defined in complete analogy to salinity we do refer here to the respective [[Characteristic Numbers of Salinity (independent of tides)|graphical representations of the characteristic numbers of salinity]] (independent of tides) for further insight.
 
==Motivation==
Calculation and graphic display of several tide-independent characteristic numbers of [[suspended sediment concentration]] can yield additional insight into [[suspended sediment concentration]] related phenomena of natural coastal and/or inland [[waters]]. In contrast to the computation of the [[Tidal Characteristic Numbers of Suspended Sediment Transport|tidal characteristic numbers of suspended sediment concentration]] the tide-independent numbers can be preferable used for

* natural [[waters]] which are not dominated by the tides, e.g. like the [[coastal waters]] and estuaries along the Baltic Sea coast of Germany, or in
* extreme situations, like for example periods of high or low fresh water [[runoff]], when [[suspended sediment concentration]] may deviate strongly from the average (tide-dominated) conditions, as well as for the
* determination of characteristic values of [[suspended sediment concentration]] for an arbitrary long (or short) period of time. 

In particular there are several useful applications possible for this type of data analysis:

* In addition to informations about the highest and lowest [[suspended sediment concentration]] values which occur during an arbitrary period one can calculate also the maximum [[suspended sediment concentration]] difference for this time span. This is a good [[indicator]] for the natural variability of [[suspended sediment concentration]].
* Maximum values for the (rate of) increase and (rate of) decrease of [[suspended sediment concentration]] are an additional measure for the characterization of e.g. extreme [[runoff]] situations.
* From the computed times for the duration of high [[suspended sediment concentration]] and the duration of low [[suspended sediment concentration]] one can draw conclusions with respect to the impact of [[suspended sediment concentration]] on organisms living in the water or along the beaches.
* The variance of the time-dependent [[suspended sediment concentration]] evolution with respect to mean [[suspended sediment concentration]] can be used as an [[indicator]] for the dynamics of a natural water system. 

'''An automatic analysis of all tide-independent characteristic numbers of [[suspended sediment concentration]] is carried through by the computer programs [[LZKSF]] and [[NCANALYSE]].'''

==Definitions for the tide-independent characteristic numbers of suspended sediment concentration==

===Program [[NCANALYSE]]===

====Maximum Value of Suspended Sediment (HSus)====
Highest (local) value of suspended sediment within the [[period of data analysis]].<br />
[[Example figure: maximum value of suspended sediment]]. <br />
Data analysis: [[NCANALYSE]].

====Maximum valid value of Suspended Sediment====
Highest valid (local) value of suspended sediment within an arbitrary period of time, computed out of a time serie which may contain invalid data due to different reasons (drying, instrument failure, etc.).<br />
<!-- [[Example figures: maximum value of suspended sediment].<br /> -->
Data analysis: [[NCANALYSE]].

====Minimum Value of Suspended Sediment (NSus)====
Lowest (local) value of suspended sediment within the [[period of data analysis]].<br />
[[Example figure: minimum value of suspended sediment]]. <br />
Data analysis: [[NCANALYSE]].

====Minimum valid value of Suspended Sediment====
Lowest valid (local) value of suspended sediment within an arbitrary period of time, computed out of a time serie which may contain invalid data due to different reasons (drying, instrument failure, etc.).<br />
<!-- [[Example figures: minimum value of suspended sediment].<br /> -->
Data analysis: [[NCANALYSE]].

====Mean Value of Suspended Sediment====
Mean value of suspended sediment  within the [[period of data analysis]].<br />
[[Example figure: mean value of suspended sediment]]. <br />
Data analysis: [[NCANALYSE]].

====Maximum Suspended Sediment Difference====
Difference in suspended sediment between maximum and minimum value within the [[period of data analysis]].<br />
[[Example figure: maximum suspended sediment difference]]. <br />
Data analysis: [[NCANALYSE]].

====Standard Deviation of Suspended Sediment====
Standard deviation of suspended sediment within the [[period of data analysis]].<br />
Computed for permanently flooded areas only.<br />
[[Example figure: standard deviation of suspended sediment]]. <br />
Data analysis: [[NCANALYSE]].

====Variance of Suspended Sediment====
Variance of suspended sediment within the [[period of data analysis]].<br />
Computed for permanently flooded areas only.<br />
[[Example figure: variance of suspended sediment]]. <br />
Data analysis: [[NCANALYSE]].

====Duration of High Suspended Sediment====
Time span for which suspended sediment lies ''above'' a certain threshold within an arbitrary period of time.<br />
[[Example figures: duration of high suspended sediment]]. <br />
Data analysis: [[NCANALYSE]].

====Duration of Low Suspended Sediment====
Time span for which suspended sediment lies ''below'' a certain threshold within an arbitrary period of time.<br />
[[Example figures: duration of low suspended sediment]]. <br />
Data analysis: [[NCANALYSE]].

====Relative Frequency Distribution of Suspended Sediment====
Relative frequency of suspended sediment within given suspended sediment intervals.<br />
[[Example figures: relative frequency distribution of suspended sediment]]. <br />
Data analysis: [[NCANALYSE]].

====Cumulative Frequency Distribution of Suspended Sediment====
Cumulative frequency of suspended sediment within given suspended sediment intervals.<br />
[[Example figures: cumulative frequency distribution of suspended sediment]]. <br />
Data analysis: [[NCANALYSE]].

====Exceedance Frequency of Suspended Sediment Limits====
Exceedance frequency of suspended sediment limits within the [[period of data analysis]].<br />
[[Example figures: exceedance frequency of suspended sediment limits]]. <br />
Data analysis: [[NCANALYSE]].

====Underflow Frequency of Suspended Sediment Limits====
Underflow frequency of suspended sediment limits within the [[period of data analysis]].<br />
[[Example figures: underflow frequency of suspended sediment limits]]. <br />
Data analysis: [[NCANALYSE]].

====Quantiles of Suspended Sediment====
suspended sediment value of a time series which is not exceeded of a certain percentage of suspended sediment values in the serie. <br />
Computed for permanently flooded areas only.<br />
* a) [[Example figure: median of suspended sediment Q_0.50]]
* b) [[Example figures: quantiles of suspended sediment Q_0.01, Q_0.05, Q_0.95, Q_0.99]]
Data analysis: [[NCANALYSE]].

===Program [[LZKSF]]===

====Maximum Value of Suspended Sediment Concentration====

Highest value of [[suspended sediment concentration]] within an arbitrary period of time.<br />
Example: not available.

====Minimum Value of Suspended Sediment Concentration====

Lowest value of [[suspended sediment concentration]] within an arbitrary period of time.<br />
Example: not available.

====Mean Value of Suspended Sediment Concentration====
Arithmetic mean of [[suspended sediment concentration]] for an arbitrary period of time.
Example: not available.

====Maximum Suspended Sediment Concentration Difference====

Difference in [[suspended sediment concentration]] between highest and lowest [[suspended sediment concentration]] for an arbitrary period of time.<br />
Example: not available.

====Maximum (Rate of) Increase of Suspended Sediment Concentration====

Maximum increase of [[suspended sediment concentration]] (within one hour) within an arbitrary period of time.<br />
Example: not available.

====Maximum (Rate of) Decrease of Suspended Sediment Concentration====

Maximum decrease of [[suspended sediment concentration]] (within one hour) within an arbitrary period of time.<br />
Example: not available.

====Standard Deviation of Suspended Sediment Concentration====

Standard deviation of [[suspended sediment concentration]] with respect to the mean value of [[suspended sediment concentration]] within an arbitrary period of time.<br />
Example: not available.

====Variance of Suspended Sediment Concentration====

Variance of [[suspended sediment concentration]] with respect to the mean value of [[suspended sediment concentration]] within an arbitrary period of time.<br />
Example: not available.

====Duration of High Suspended Sediment Concentration====

Period of time during which [[suspended sediment concentration]] lies above a specific threshold for [[suspended sediment concentration]].<br />
Example: not available.

====Duration of Low Suspended Sediment Concentration====

Period of time during which [[suspended sediment concentration]] lies below a specific threshold for [[suspended sediment concentration]].<br />
Example: not available. 

====Advective Transport of Suspended Load====
Volume of suspended sediment, which is transported through a cross section over a period of time.<br />
Example: not available. 

====Mean Advective Suspended Load Transport====
Mean value of suspended [[sediment transport]] within a period of time.<br />
Example: not available. 

====Maximum Advective Suspended Load Transport====
Highest value of suspended [[sediment transport]] within a period of time.<br />
Example: not available. 

====Minimum Advective Suspended Load Transport====
Lowest value of suspended [[sediment transport]] within a period of time.<br />
Example: not available. 


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