Glaciers
As many people hear the word glacier they immediately think about the Titanic and how it sank because it ran into a glacier. What many people do not know is the history of glaciers. There are a couple different types of glaciers, for instance the type that the titanic ran into is a Tidewater glacier, which is a glacier that flows in the sea. There are also alpine glaciers which are glaciers that are found in the mountains, and there are Continental glaciers which are associated with the ice ages, and that covers most of the contnents at one time; including Indiana. Glacier ice is the largest amount of fresh water in the world only second to the oceans as the largest reservoir of water total. Glaciers are found on every continent except Australia.
Glaciers are more or less permanent bodies of ice and compacted snow that have become deep enough and heavy enough to flow under their own weight. Glaciers require very specific climatic conditions. Glaciers develop where the temperatures are cold enough to allow the snow to accumulate and compacted. Most are found in regions of high snowfall in winter and cool temperatures in summer. These conditions ensure that the snow that accumulates in the winter isn't lost (by melt, evaporation, or calving) during the summer. Such conditions typically prevail in polar and high alpine regions. There are two main types of glaciers: valley glaciers and continental glaciers (Armstrong).
When it comes to the snow lasting ...
“How Dangerous are Glaciers?: Glaciers Have Their Own Warning Signs.” Alaska Satellite Facility. University of Alaska Fairbanks, 2014. Web. 17. Feb. 2014.
Glaciers have drastically changed over time because on average, “glaciers worldwide have been losing mass since at least the 1970s”. The melting of glaciers has been contributing to the rise in sea level because the glaciers have been shrinking faster in the last decade. Three of the major glaciers in the us have shown an overall drop in mass since the 1950s and 1960s and an accelerated rate of decline in recent years. An ice cap covered Mt. Hood during the Ice Age, from about 1.8 million years ago to about 10,000 years ago. These ice caps covered the Oregon Cascades, a series of mountains in Oregon, with glaciers going down on the east and west sides of the range. These glaciers melted into smaller glaciers as the weather proceeded to get warmer...
The term snow is usually restricted to material that fall during precipitation in the form of small white ice crystals formed directly from the water vapour of the air at a temperature of less than 0°C and has not changed much since it fell. A fall of snow on a glacier surface is the first step in the formation of glacier ice, a process that is often long and complex (Cuffey and Paterson, 2010). The transformation of snow to ice occurs in the top layers of the glaciers and the time of the transformation depends mostly on the temperature. Snow develops into ice much more rapidly on Temperate glaciers, where periods of melting alternate with periods when wet snow refreezes, than in Polar glaciers, where the temperature remains well below the freezing point throughout the year. The density of new snow as it falls on glacier surface depends mostly on the weather conditions. In clam conditions, the density of new snow is ρs ≈ 50 – 70 kg m-3 (Table 1.1). If it is windy, there is breaking of the corners of snowflakes, and the density is more like ρs ≈ 100 kg m-3. After the snow has fallen on the surface, there are three processes that are all active together and work to transform the snow to ice.
This artic tundra is mainly formed by permafrost, “a layer of permanently frozen subsoil in the ground. Putting frozen ground and flat landscape stops the drainage of water. As the water is being held up on the surface it makes ponds and bogs that give moisture for the plants, or countering the low precipitation. “The periodic freezing and thawing of the soil forms cracks in the ground in regularly patterned polygons”. Some areas are not drained very well causing irregular landforms. Some of these landforms like the following hummocks, or knolls, frost boils, and earth stripes. Another common area to the alpine tundra is a “bare rock covered ground” also known as fell fields, in which not alone support but helps the growth of lichens. The many “microhabitats” given by these landforms provide a variety to the tundra’s landscape.
Some say that the only reason glaciers are melting is because of low evaporation and not hot temperatures. That is one of the reasons , but the other is because there is some mu...
For about five years California has experienced above average temperatures and a lack of rain. This lack of rain and snowfall has caused California to become increasingly dry, starting arguments over whose right to water is more important and who needs to be more mindful with their use of water. Farming in California truly began during the gold rush when water was redirected to land where food was grown for those looking for gold (Siegler, 2015). The farmers that have stayed on that land now have senior water rights (“Water wars”, 2015). Farmers that settled their land before 1914 are those with senior water rights (Terrell, 2015). Governor Jerry Brown has called for a cut in water use by one-quarter percent to people living
Today, in the contemporary United States, there are many different influencers to a person’s health, such as poverty and/or unemployment. However, education is the most important influence on health because without a good, thorough education, people are less likely to have access to health care, be able to afford health care and they are more likely to live shorter lives. A lack of education makes poverty and unemployment more likely, which obviously have a negative effect on a person’s health.
California government should be allowed to make laws to manage aquifers so that families can once again enjoy the simple freedom of having running water . “For Angelica Gallegos, the worst part has been going without a shower for five months” (Source 2). Most families don’t have the liberty to shower due to the lack of water California receives. “...At least 1,300 people have lost their water in and around East Porterville, nearly three hours’ drive north of Los Angeles, making the town’s residents some of the hardest hit victims of the three-year-old drought” (Source 2). A majority
All of Maine was once covered by glaciers, the last of which receded about 10,000 years ago. Because of the glaciers, much of Maine is covered with stones, boulders, and clays. Many of the hills and mountains have been rounded, lakes have been formed, and river courses have been changed. Although glaciers covered all of Maine, there are nevertheless substantial physiographic differences in the regions of the state. Maine can be divided into three major natural regions: the White Mountain section, the New England Upland, and the Seaboard Lowland. These three regions are part of the New England province, which in turn forms part of the Appalachian Region.
Just a couple weeks ago, we were complaining how winter was so cold and how it would never end in Canada; but imagine living in the glacial period, where there was a time when glaciers, large masses of ice, covered a huge portion of the Earth’s surface. Studies show that the polar ice caps, as we know them today used to cover approximately 30% of the Earth during our last Ice Age. The Earth remained in this state for thousands and thousands of years. Cold, right? According to geologists, there have been an approximate total of 5 major ice ages. They began appearing roughly 2, 300, 000 years ago, up until the most recent one, approximately 10,000 years ago; it was the ice age period/glacial period, and that’s was exactly what happened. Ice Ages are points in time when the temperatures around the world, including the atmosphere and the surface of the Earth, were cold consistently for a span of over multiple thousand years. Unlike the average temperature of 220C we have now, the ice ages were much colder, having an average of approximately 50C.
People with more education have better physical and mental health; also education helps improve the overall quality of people’s lives. By helping people get better jobs, it reduces financial worries. It builds self-esteem, feeling of being in control; it also makes them critically aware of media messages about health. It contributes to health behaviors, such as moderate drinking, anti-smoking, according to the Institute of education at the University of London (Dec. 2004). As stated earlier, education reduces inequalities, creates intolerance, build social cohesion and boost the health of whole communities.
Earth is the only planet in the Solar System that has liquid water. The ocean contains ninety seven percent of the earth’s water and covers almost three quarters of the planet. There are four different oceans, the Pacific, Atlantic, Indian, and the Arctic. Tides and currents occur in all three of these oceans. Many different kinds of fish and mammals also make their homes in these oceans. All of these oceans are connected to each other in some way. Humans find oceans to be very interesting, beautiful, and exploring.
Furthermore, education aids in gaining social support, from strengthening social networks to mitigating social stressors (Freudenberg & Ruglis, 2007). With education, people acquire a greater sense of control, and better health. Recent reviews show policies increasing educational achievement may play a significant role on population health (Freudenberg & Ruglis, 2007). In addition, estimates propose investments seeking to improve educational attainment can actually save more lives than medical advances. These possibilities can only be realized however if public health researchers develop new methods to study reciprocal relationships between health and education, and the need for
It has led to the development of new dialects and modification of existing ones. The British Empire has been able to spread the language across the globe and to date it is the most widespread language and most used in foreign transactions. Currently, the population of non- native English speakers is higher than native English speakers. This is a clear indication that English has become an international language.
English spreads widely in each countries, no matter the area of region or information transfer, English becomes an important position in global language. As the specification of a global language, it essentially refers to a language that learned and spoken internationally, so English can be the most out-standing. According to the number of English-speaking calculations, English is the official language used by most countries, English is the most widely used second language in the world, and the percentage of web pages with English content is estimated to be over 50% (Crystal, 2003). Meanwhile, the history and usefulness cause English to be a global language, and they mainly influence to spread English faster in China and to bring convenience