School of Environment
Environmental sampling
Sediment sampling
UWITEC deep water corer (ARRIVING DECEMBER 2014)
A deep water coring system used to obtain sediment cores from lake, harbour and other marine settings in water depths of up to 140 m. The potential length of sediment core that can be collected from any site is 24 m (depending on sediment type and consolidation).
Vibrocorer
A simple and portable motorised coring system for extracting relatively undisturbed 75mm diameter cores up to 6m in length. This land based corer is used most often in unconsolidated sedimentary settings such as estuaries and estuarine margins but struggles in gravel or unsaturated dune sand materials.
Freeze corer
Used to sample finely stratified sediments in very soft sedentary environments such as lakes.
Eijkelkamp handheld corers and augers
We have a set of manual gouge augers (20mm, 30mm, & 60mm) and 38mm diameter piston corers which are designed for sampling soft sedimentary environments up to depths of 5 to 7 metres in 0.5 or 1.0 metre increments.
Dormer augers
We have a number of sets of Dormer augers which are used to sample loose muddy, sandy, and gravel settings.
Box corer
Is designed for extracting intact surficial samples up to 20cm depth from a boat in shallow marine settings up to 2m water depth.
Wildco Ekman bottom grab sampler
A spring-loaded grab sampler (150mm x 150mm x 150mm) usually lowered from a boat by string-line and activated by a stainless steel messenger. Used to the top layers of soft sediments.
D-section corer
Also called a peat corer, this allows for sampling of a virtually undisturbed 50mm diameter core up to 40cm in length from a discrete depth range.
Helley Smith bedload sampler
A handheld catch net usually used to sample sand-sized bedload (>100um) in stream flow.
Krauss sediment traps
Used for stratified sampling of suspended sediment load (>100um) in bi-directional flow environments (e.g., swash zones or tidal inlets).
Water Sampling
USDH-48 Depth integrating suspended sediment sampler
A handheld device used for representative sampling of suspended sediment load in streamflow. Captures samples in a 400ml bottle.
Vertical Beta water sampler
A spring-loaded wide mouth water sampler designed for sampling at depth by string-line activated by a stainless steel messenger.
Ecological sampling
NIWA EFM300 Electric fishing machine
The EFM is a battery powered backpack unit operated in-stream to allow live fish capture for fish population surveys.
Users must be certified EFM operators.
