User:Cli681/sandbox

Article evaluation
Everything in the article is relevant to the article topic. It also includes other technical terms that are relevant to erosion and the process of forming the erosion surface. The information is from 2015, which is relatively new. The article can certainly be expanded by adding examples of the erosion surface and more details about its process of formation. The information is presented clearly and accurately and all the technical terms that might cause confusion are linked to other Wikipedia articles.

The tone of the article is in third person, neutral and formal. It does not seem like there is any biased opinion presented in the article.

Unfortunately, there is only one source of reference for this article and it is in Swedish which I cannot understand. However, all the links in that source work and the author also link a Wikipedia page of the writer of the source. She appears to be a geologist who has published books which adds to her credibility.

There aren't any conversations yet. The article is rated as Stub-Class on the project's quality scale and Mid-importance on the project's importance scale. It is part of Wiki Education Foundation-supported course assignment.

Lead Section Addition
An example of erosion surface is road surface erosion which is caused by natural and anthropogenic factors. Erosion surface can be measured through direct, contact measurement methods and indirect, non-contact measurement methods.

Road Surface Erosion
Just like mountains and rocks, erosion can also occur on unsealed roads due to natural and anthropogenic factors. Road surface erosion could be caused by snowfall, rainfall and wind. The material and hydraulic of the road surface, road slope, traffic, construction, and maintenance could also potentially affect road surface erosion rate. During winter, snow cover slows down erosion rate by preventing direct contact between the raindrop and the road surface. For example, in the mountains of Idaho, U.S., snowfall caused less than 10% while rainfall caused 90% of total annual sediment production on the road surface. In addition to natural factors, high traffic volume can also speed up the road erosion rates. The friction caused by moving vehicles could potentially lead to crushing and abrasion, thus break down the coarse particles on the road surface. Slope steepness is another important factor in surface erosion--steeper roads tend to have higher erosion rates.

Erosion Surface Measurement
There are two types of methods to measure the rate of surface change: direct, contact measurement methods and indirect, non-contact measurement methods. These measurement could be taken for different components of a rock or for different rock types. Rate of rock surface recession can be measured by using reference points or reference planes and measure the distance among those points and plane over the years. Rock surface erosion rate can also be measured using Micro-Erosion Meter(MEM). This triangular instrument is placed on three studs that are permanently fixed into the rock surface to provide a measurement site. The extension of the probe is then used to measure erosion. Indirect, non-contact measurement methods include laser scanning and digital photogrammetry. While laser scanning requires many specialist and expensive equipment, repeat photography and digital photogrammetry can also be used to obtain data for researchers with a much smaller budget.