Request - add new event attributes: salinity, conductivity, pH

[ridabrams]

MK edits to clarify:
additions to https://arctos.database.museum/info/ctDocumentation.cfm?table=ctcoll_event_attr_type are proposed:

Salinity to be measured in g/L, g/kg, or %. It is the amount of salt dissolved in a body of water and an important factor in determining the chemistry and biological processes possible in a given body of water.
Conductivity to be measured in uS/cm. It is a measure of water's capacity to pass electrical flow. The more ions from dissolved salts and inorganic compounds in the water the higher the conductivity. It is therefore an indirect measure of salts, alkalis, chlorides, sulfides and carbonate compounds.
pH to be measured on a numeric scale with no units. It is a measure of the free hydrogen or hydroxide ions in the water. It can be an indicator of salinity or other dissolved compounds.

These need definitions. General question: Should the terms clarify these are for aquatic events or is that obvious?

[dustymc]

Salinity

Seems reasonable, https://arctos.database.museum/info/ctDocumentation.cfm?table=ctconcentration is probably the correct units code table.

Conductivity

This needs reconciled with https://arctos.database.museum/info/ctDocumentation.cfm?table=ctattribute_type#electrical_conductivity (suspect the record attribute should be moved to events and I'm not 100% sure of how to handle 'electrical' - is that a method, redundant, unit-dependent, ????)

pH

I think reasonable (although I'm a little surprised we don't have this somewhere, am I just not finding something??), but

numeric scale with no units.

is not compatible with the model - possibly add "logarithmic units" or something of the sort to https://arctos.database.museum/info/ctDocumentation.cfm?table=ctcount_units

Should the terms clarify these are for aquatic events

I don't think so, they should be defined functionally (describe what they do) and can be used however they're useful (which often turns out to be something that wasn't anticipated).

[mkoo]

Can you please add some wikipedia (or other) links for each?

And agreed with Dusty on salinity and pH

I cant wrap my head around electrical_conductivity as attribute or collecting event so that needs some discussion

[happiah-madson]

OGL has some of these data types, too, so I'd be happy to join in discussions

[campmlc]

Conductivity is like Air Temperature for marine and aquatic collections, recording the environment at the time and place of collection- and an attribute of the collecting event. Our Fish collection can also use these.

[esdearmon]

The Conductivity should include both actual and specific. Actual conductivity is the reading at what the water temperature actually is at, while specific conductivity is a corrective measurement at 25 Celsius. With our records, these are usually both taken. As Mariel said, this would help our collection out a lot to have it included in collecting event.

[esdearmon]

In addition to these parameters, would we be able to add the following as well?

Secchi depth: measures the clarity/visibility of water. Measured in cm
DO (dissolved oxygen): the amount of oxygen dissolved in a liter of water. Measured in mg/l, % or ppm