Surface Web

There was much more pollution around this area than I had previously expected. As soon as I came into view of the bridge, I could already see a glass bottle floating down beneath it. I investigated the surface of the water and the concrete areas under and around the bridge, and I discovered that the most common types of pollution were glass/plastic bottles, cigarette butts, plastic bags, and food containers that come from large fast food chains, like KFC…

type as well as the physico-chemical make-up of the soil. Soils generally fail in shear. At failure, shear stress along the failure surface (mobilized shear resistance) reaches the shear strength, Holtz and Kovacs (1981). The soil grains slide over each other along the failure surface. No crushing of individual grains. At failure, shear stress along the failure surface (t) reaches the shear strength (tf). Using the Mohr – Coulomb criterion, Figure 10.1, we have in terms of effective stresses…

where the pesticide was applied will have the highest concentrations. As you move away from those areas the concentration should decrease. Although they can remain high due to runoff, and wind deposits. The soil depth must also be considered. The surface soil will have the highest concentration. As the pesticide leaches through the soil the…

Introduction The urbanization of a catchment is a drastic change in land use, and has major effects on the hydrological cycle during heavy rainfall events because of its impermeable surfaces (G. E. Hollis). By recording the discharge in a catchment the data can be used to create a hydrograph. It is often useful to analyse a hydrograph because it shows how quickly rainwater moves to the stream channel (Holden J. 2012.) The aim of this study is to compare an urban and rural catchment, and to find…

Erik Vargas 11/7/2017 Period 1 Water Erosion Purpose The purpose of this lab is to examine the streamflow and how it removes soil from the banking over time. Background Information “Water erosion comes in several different forms with various causes. No matter the differences, we humans can have a large impact on our water quality and erosion rates. While the causes of erosion by water are generally natural, we can play a large role in reducing water erosion, and preventing water…

The Pacific Northwest was once full of an abundance of untapped resources, it was barely populated and was the definition of a hinterland. As the Pacific Northwest started to become known and resources started to become majorly exploited and shipped, we slowly become what we are now, not a hinterland. After all the overuse and misuse of the land we are not and will never hinterland again. The definition of a hinterland is defined as parts of the country that is less developed and…

Poison Dart frogs A popular poison found in nature is Poison Dart Frogs. These frogs live in rainforest habitats in Central and South America and some in the Hawaiian Islands. The name Poison Dart Frog is a name of a group of frogs in the family dendrobatidae. The frogs are mostly bright colored and are diurnal, which means they come out during the day and sleep at night. As usual, Poison Dart Frogs have a delivery system. The article, Poison Dart Frogs, by Vera L. Figueiredo says “The toxins…

It is a beautiful day in Utah at the Timpanogos Cave National Monument. I have packed a backpack of water, snacks, and a flashlight. After double checking to ensure I have my Cave ticket to tour the inside of the cave, I start the trail. After passing the Visitor’s Center I come to a talus slope. A talus slope is a pile of loose rocks that have collected at the bottom of a mountain, cliff, or any high point. Looking at the walls around the area I can see how erosion has weakened the walls near…

A common refrain in 1960 was "Lake Erie is Dead." In the 1960s Lake Erie was terribly polluted. We cleaned it up, but it’s polluted once again. Lake Erie contained increased levels of phosphorus and nitrogen, which contributed to eutrophication, (a process that encourages the development of algal blooms). Since the 1960s Lake Erie has had many problems with algae. Waste water from the sewers also made their way into the lake, as this was happening factories were dumping pollutants into the…

one of the things that I learned more about was the problem with surface runoff of fertilizers and how it interacts with herbicides. The lab showed the participants on a small scale how eutrophication occurs and how it doesn't take a long time for algae to take over an area. Nitrogen and Phosphorus are usually found in fertilizers but not always at the same time. A study done said “ Concentrations of phosphorus and nitrogen in surface waters are being regulated in the United States and European…