related to: nvs-vocabs/P01#207

Proposed definition: Biologically distinct samples that are collected in parallel to capture random biological variation.

2 new combined S29 terms needed for: nvs-vocabs/P01#227

"sampling processor (upper filter) " with definition "The top filter in a cascade or sequential filtration setup designed to exclude material retained by the filter. Only material and liquid that pass through the filter are used in the analyses."

and

"sampling processor (lower filter) " with definition "The bottom filter in a cascade or sequential filtration setup used to collect particulate material from a sample (typically water sample). Only the material collected on the filter is used in the analysis."

New S19s required:
63-160um
160-250um
163-250um
10000-13000um
13000-16000um
400-1250um
2000-2500um
2500-3150um
3150-4000um
2500-4000um
4000-5000um
5000-6300um
6300-8000um
8000-10000um
12500-16000um
16000-20000um
6300-10000um
25-63um
1600-4000um
12500-25000um
1000-1600um
63-163um
50-200um
2-10um
10-63um
10000-16000um
2000-31500um
31500-4000um
40-63um
63-200um
50000-200000um
6300-20000um

125000um

To associate with the S18 for particles

Term name (PrefLabel)

geomorphological feature

Definition

A topographic or bathymetric feature of the seafloor, coastline or terrestrial land surface created by physical, chemical or biological processes, such as beaches, dunes, bedforms, seamounts and ridges.

related to: nvs-vocabs/P01#207

Proposed definition: Subsamples, or repeated processing, of a parent sample, to capture variation in handling of each replicate, or simply to repeat the processing.

"sample extraction method" with definition: "Method used to separate the analysed sample from its matrix."

Required for: nvs-vocabs/P01#227

New S29 required for:

Secchi disk relative to water surface.

Requires new S18: Secchi disk
Created here nvs-vocabs/S18#8

Existing S19: S1900001 not applicable
Existing S20: S2000005 water surface

A new term was required to describe the internal conductivity cell of a CTD instrument.

A new S18 term was created 'conductivity cell', documented here:
nvs-vocabs/S18#11
Definition: A glass cell containing electrodes, usually platinum, used to measure the electrical conductivity of the liquid occupying the cell.

A new S19 was created 'internal':
Definition: The inner part or feature of an object or entity.

This was combined to create a new S29 term:
Code: PE001493
Preferred label: conductivity cell (internal)
Definition: The internal part of a glass cell containing electrodes, usually platinum, used to measure the electrical conductivity of the liquid occupying the cell.

This S29 term will be live on the NVS from 0730 UTC tomorrow morning.

The following S29 terms have been created and are now live on the NVS:

PE001480 particles (dust)
PE001481 particles (fine-grained sediment)
PE001479 particles (mud carbonate)
PE001482 particles (mud mineral)
PE001483 particles (sand carbonate)
PE001484 particles (sand mineral)
PE001485 particles (gravel carbonate)
PE001486 particles (gravel mineral)

https://vocab.nerc.ac.uk/collection/S29/current/PE001480/
https://vocab.nerc.ac.uk/collection/S29/current/PE001481/
https://vocab.nerc.ac.uk/collection/S29/current/PE001479/
https://vocab.nerc.ac.uk/collection/S29/current/PE001482/
https://vocab.nerc.ac.uk/collection/S29/current/PE001483/
https://vocab.nerc.ac.uk/collection/S29/current/PE001484/
https://vocab.nerc.ac.uk/collection/S29/current/PE001485/
https://vocab.nerc.ac.uk/collection/S29/current/PE001486/

Definition: A uniquely identifiable programme of data collection.

Based on MEDIN definition:
read_this_first.pdf
This definition also provides examples 'such as a research cruise, moored instrument deployment or survey event'
A survey event is defined as 'a means to group samples together – for example, a long transect broken up into smaller transects; A defined survey area where several transects have been placed; or a drop-down video split into sample clips by observed changes in biotope.'

Associated with: nvs-vocabs/P01#177

New S29 required using existing elements:

S18: http://vocab.nerc.ac.uk/collection/S18/current/S1800016 instrument output
S19: http://vocab.nerc.ac.uk/collection/S19/current/S1900678 800nm wavelength
S20: http://vocab.nerc.ac.uk/collection/S20/current/S2000001 not applicable

Description:
Raw signal generated by a measuring instrument. The physical entity refers to a single specified wavelength.

Required as part of nvs-vocabs/P01#249

"sampling method" defined as Method used to obtain the samples used for the analysis.

Required for: nvs-vocabs/P01#227

create equivalence, replace in P01 semantic model and deprecate "particles <125um "

New S29 term required for waves relative to True North which is the combination of existing S18 and S20 terms respectively: waves and True North, to facilitate the creation of two new P01 terms.

New combined S29 terms needed for the following particle size classes: <45um

"sample preservation method" Method used to preserve the samples after collection and prior to analysis.

Required for: nvs-vocabs/P01#227

We need a new S29 term which is the combination of sample and filtered. The later is a new term in S19 which will be live after our next refresh.

New S29 term required in order to migrate terms of Sea-floor depth as explained in nvs-vocabs/P01#213.

New term available on the NVS in the morning of 13/09/2024:

PE001549 seafloor relative to Mean Sea Level datum - The property relates to the solid surface underlying a sea or an ocean relative to a vertical datum based on the arithmetic mean of hourly heights observed over the National Tidal Datum Epoch. Shorter series are specified in the name; e.g. monthly mean sea level and yearly mean sea level. Adapted from https://tidesandcurrents.noaa.gov/datum_options.html

New S29 to be created for heat.

Preferred label: heat
Definition: Energy transferred to or from a thermodynamic system, by means of convection, conduction, radiation or friction.

This is in relation to nvs-vocabs/P01#157

"sampling instrument" defined as "Equipment designed to collect physical samples."

Required for nvs-vocabs/P01#227

Associated with nvs-vocabs/P01#202

Request for new S29 term:
river water relative to ground surface

This will require a new S18 term for river water:
nvs-vocabs/S18#18

It will be paired with the existing S20 term:
S2000011 - ground surface

Related to: nvs-vocabs/P01#207

Proposed definition: samples collected independently over a timeframe, specifically collected to estimate changes to the subject of interest over that timeframe.

We need the following 3 new S29 combinations to complete nvs-vocabs/P01#257:

measurement platform relative to magnetic north (S18+S20)
measurement device (S18) --> new S18 needed
measurement device relative to True North (S18+S20)

"sub-sampling protocol" defined as "Method used to divide the sample into sub-samples."

Required for: nvs-vocabs/P01#227

New term for either ADCP transducer or more broadly transducer to support the creation of one new P01 term.

Related to: nvs-vocabs/P01#207

Proposed definition: samples collected independently over some area, specifically collected to estimate statistical information about that area.

Definition: 'A representative part, quantity, or single item from a larger whole or group.'

https://www.merriam-webster.com/dictionary/sample

Associated with: nvs-vocabs/P01#177

S18: S1800114 - spawning grounds
S19: S1900001 - not applicable
S20: S2000001 - not applicable

definition: Areas of water where aquatic animals spawn, or produce their eggs.

related to:
nvs-vocabs/S18#20
nvs-vocabs/P01#224

Defined as: A structure or vehicle that serves as a base for deploying sampling or sensing equipment.

Related to new P01 creation for OBIS in replacement to Q01 concepts (see: nvs-vocabs/P01#227)

Relates to nvs-vocabs/P01#229

Proposed definition: A location at which measurements or samples were taken.

We created some entries in the S29 vocabulary for particle grain size classes that are effectively synonyms:
See e.g. particles (0-1um) (http://vocab.nerc.ac.uk/collection/S29/current/PE000318/) and particles (<1um) (http://vocab.nerc.ac.uk/collection/S29/current/PE000226/)
We have 10 size classes affected by this.
We also have 23 terms which use the “0 to upper limit“ convention and 40 that use the “<” convention.
Before doing this investigation the thought was to deprecate the “<” in favour of the more explicit “0-“ (see #6).

However this will result in more S29 and P01 codes being changed than if hamonising on the "<" convention.
Also the "<" convention is more commonly used and is what human users would normally use or search for.
Also the “<” convention is in keeping with what we have used in the matrix definitions based on size range.
So the decision leans in favour of harmonising on “<” rather than “0-“
We will add the "0-" convention as an alternative label.

New S29 required:

• relative to mean sea level

Existing S18: S1800001 not applicable
Existing S19: S1900001 not applicable
Existing S20: S2000008 mean sea level