The Ice Of Drilling For Ice Cores

Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 7,000 years ago marking the beginning of the modern climate era — and of human civilization. Earth-orbiting satellites and other technological advances have enabled scientists to see the big picture, collecting many different types of information about our planet and its climate on a global scale. This body of data, collected over many years, reveals the signals of a changing climate.

Earth has experienced many episodes of dramatic climate changes with different periods in earth history. There have been periods during which the entire planet has been covered in ice and at another time it has been scorchingly hot and dry. In this regards, earth has experienced at least three major periods of long- term frigid climate and ice ages interspersed with periods of warm climate. The last glacial period which current glaciers are the result of it, occurring during the last years of Pleistocene, from approximately 110,000 to 10,000 years age (Clayton, 1997). Indeed, glaciers present sensitive indicators of climate change and global warming and by estimating and monitoring the dynamic evolution of these ice masses, several

The Late Pleistocene period was when the final glacial episode of ice sheets covered much of the northern hemisphere. This event happened about 125,000 years ago and lasted

There have been at least five major ice ages in the pass one billion years. The most recent was called the Pleistocene Ice Age, which began about two million years ago. Interglacial periods occurred where temperatures increased slightly and the glaciers would melt and retreat.

Collaborating on an international level remains important for conducting ice patch research due to the rapid melting of alpine ice and decay of valuable artifacts. The work conducted for this thesis included cooperation from Parks Canada. Ice patch research was conducted not only on the U.S. side of the international border, but also on the Canadian side of Chilkoot Pass. Parks Canada allowed me and KLGO archaeologists to use the Canadian warden cabin at the summit of Chilkoot Pass as a basecamp for the ice patch study (Figure 1.4). Working between two sovereign countries emphasizes the matter of climate change as a global issue and the importance in maintaining international relations. Maintaining international relations benefits the scientific community on a global scale and provides significant research opportunities.

Global warming persists as one of the world’s biggest issues today that is causing several problems that include the world’s severe climate and rising sea levels while possibly being the main cause as to why all of mankind could go extinct. This global crisis is known as the steady increase in the world’s average temperature of the earth’s atmosphere and oceans that are proven to be permanently changing the world’s climate (Live Science, 2014). This phenomenon is strongly evident as Earth’s temperature has also increased by 2 degrees Celsius since the last century. As a result of this, Canadian glaciers are melting at a higher rate of 2 to 3 feet than of what it was a decade before (Lerner, 2014). All astoundingly happening while the Artic Canadian permafrost has begun to melt (Davidson,2015). The state of this issue in Canada does not seem to be improving as validated through both the scientific evidence as well as the blatant and irrefutable observable evidence.

The thesis of the film “Chasing Ice” is to portray the extreme climate change we are facing today. The film has a clear goal of showing visually the danger we are causing our planet by denying climate change. The aim of the film is to show us visually that climate change does exist and it is happening at a rapid rate. The film does a good job at providing evidence that climate change is happening, by capturing footage of the changes occurring over short periods of time. These videos captured by James Balog’s recording devices make it almost impossible to deny climate change and that is precisely the purpose of the film.

Balog was once a skeptic of climate change as he believed that the theory surrounding global warming was based off of computer models. Furthermore, he did not believe that humans could alter the world’s climate on such a global scale. However, through studies of ice records, long tubes of ice drilled from the ground, Balog found key evidence suggesting ideas contrary to his prior beliefs. These glacial tubes preserved historical records of the past similar to the rings of a tree, recording past temperatures and CO2 levels. Using these records, one can see the direct variation between temperature and CO2. Additionally, the recent spike in both

The Pleistocene often colloquially referred to as the Ice Age) is the geological epoch which lasted from about 2,588,000 to 11,700 years ago, spanning the world's most recent period of repeated glaciations. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in

Ice is one of the first indicators of global warming actually occuring and it is important for research to be done on these layers of before they disappear. The recession of glaciers and the fragmentation of ice caps has been a clear sign to many that rising temperatures are having an impact, even on our very lives.

When I watched the Antarctica’s video for the homework three, I saw some scientific and research team drill ice cores into ice to collect data. It is the ice cores. Ice cores can tell us a lot about early climates including local temptation, CO2 concentration, based on dusk trapped in the ice, global and local wind forms. Therefore, from the article, “Paleoclimatology: The Ice Core Record”, by Holli Riebeek, mentions about a group of researchers had a project in Greenland Ice. They drill corns into ice sheets that contain a record of hundreds of thousands of years of past climate. From the ice they found many organisms that can represent for the timeline from past until now. The ice cores have many layers, and each layers provides some special

Kolbert provides compelling evidence of Global Warming in the Arctic from her hands-on experience accompanying scientists in the field. From the storm surges that threaten the Alaskan village of Sarichef to the warming (and even melting!) permafrost, the evidence all point to the irrefutable fact that the planet is warming up extraordinarily fast. In fact, the Keeling Curve gives us a rather explicit visualization of how greenhouse gases levels (CO2, in particular) are rising at unprecedented rates.

The Arctic is global warming’s canary in the coal mine. It is a highly sensitive area which is profoundly affected by the changing climate. The average temperature in the Arctic is rising twice as fast as elsewhere in the world (nrdc.org). Because of this, the ice cap is getting thinner, melting away, and rupturing. Here is an example of this; the largest ice block in the Arctic, the Ward Hunt Ice Shelf, had been around for 3000 years before it started cracking in 2000 (nrdc.org) By 2002, the Ward Hunt has cracked completely through and had started breaking into smaller pieces. The melting ice caps are affecting the earth and its inhabitants in many ways. In this paper, the following concepts and subjects will be

An Ice Age is a period of geologic time in which the Earth’s climate sees a dramatic drop in temperatures. This basically means that it is a lot cooler than it was in different parts of earth’s geologic history. As a matter of fact, earth is believed to be in the middle of a glaciation period currently because of our polar ice sheets. As we know it today there were about six ice ages that have occurred throughout the history of the earth. Glaciation periods have helped shape the earth as we know it today and has helped humanity progress down its evolutionary track. Though it is agreed upon that several ice ages have occurred during earth history, the cause of these cycles is still a mystery waiting to be solved.

One of the effects of global warming is the polar ice caps’ melting. Scientists have been researching and examining the polar ice caps for a long time and they have come to the conclusion that the thin ice sheets are slowly wasting away. They have also found out that Greenland’s glaciers are getting smaller and smaller. Places around the globe that use to be covered in ice and snow are now showing more green terrain as the years go on and as the winter months grow warmer. The polar ice caps are melting more and more due to higher global temperatures. This is really bad because the ice caps “reflect and help regulate the Earth’s temperatures.”