alkema_microplastics: Ocean Microplastics Data

In cjvanlissa/tidySEM: Tidy Structural Equation Modeling

Ocean Microplastics Data

Description

These data were collected by Alkema during a cruise from 04/2018 to 06/2018 traversing the Atlantic Ocean from South Africa to Norway. A 500 micrometer meshed Manta Trawl was towed outside the wake of the ship for 1 h each day. Length, width, height and polymer type of 6.942 particles were measured using infrared spectroscopy and image analysis.

Usage

data(alkema_microplastics)

Format

A data frame with 6942 rows and 11 variables.

Details

current	factor	Which ocean current the sample was taken from
sample	integer	Sample ID
length	numeric	Particle length in mm
width	numeric	Particle width in mm
height_est	numeric	Estimated particle height in mm
height_obs	numeric	Observed particle height in mm. Height was only measured for large particles
category	factor	Particle category based on visual inspection
poly_type	factor	Polymer type as determined by near infrared spectroscopy (NIR)
two_dim	logical	Whether or not the particle can be treated as two-dimensional
film	logical	Whether or not the particle appears to be a film
line	logical	Whether or not the particle appears to be a line

References

Alkema, L. M., Van Lissa, C. J., Kooi, M., & Koelmans, A. A. (2022). Maximizing Realism: Mapping Plastic Particles at the Ocean Surface Using Mixtures of Normal Distributions. Environmental Science & Technology, 56(22), 15552-15562. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1021/acs.est.2c03559")}

cjvanlissa/tidySEM documentation built on March 16, 2024, 6:35 a.m.