Xem 1-20 trên 111 kết quả Earth surfaces
  • Knowledge of the Earth’s structure and dynamics calls for a multi-disciplinary study that makes use of the most advanced methods of Physics, Chemistry, Geology, Mathematics and Information Technology, in the framework, or in close collaboration with, the different branches of Earth Sciences such as Geology, Geophysics and Geodesy.

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  • The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night (the diurnal temperature variation).

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  • In this research, remote sensing technology was used to evaluate urban development and its thermal characteristics through mapping impervious surfaces and evaluating thermal infrared images. The study is carried out in the northern part of Ho Chi Minh City, which is experienced an accelerated urban development since the end of 1980s. Landsat and Aster images were used to calculate the variation in urban impervious surfaces from 1989 to 2006. Thermal bands were processed to obtain land surface temperatures for investigating the urban heat island effect...

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  • This paper attempts to examine the changes in surface water environment and community based coastal resources management activities in the Tam Giang Lagoon, Central Vietnam. The results show that the lagoon’s surface water has been polluted. BOD5, COD and nutrient concentration have increased in the lagoon’s surface water environment. It proved that there was a present of organic substances. Due to the globalization of seafood products and changes in lagoon’s water quality by aquaculture development; the local government has...

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  • (BQ) Ebook Earth science: Changes To Earth's Surface includes what can cause a landslide? What makes magma rise inside a volcano? Why do earthquakes happen at faults? Erosion and deposition are two forces that change landforms. Explain in your own words what each force does. Include details from the book to support your answer.

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  • We are privileged to be living in one of the greatest eras of exploration that humankind has ever undertaken. Our current Age of Space grew out of the dark struggles of World War II when large rockets were developed as agents of mass murder. The subsequent Cold War rivalry between the United States and Soviet Union pushed rocket capabilities to the point that it became possible to send vehicles into Earth orbit and beyond (even though the stated aim was to send missiles carrying nuclear weapons over mere continental distances). The Russians put the first human into Earth orbit.

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  • Volcanic Eruptions and Hazards: What is a volcano? A volcano is a vent or  'chimney' that connects molten  rock (magma) from within the  Earth’s crust to the Earth's  surface.  The volcano includes the surrounding cone of erupted material.

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  • If you’re reading this book, you know a bit about Google SketchUp and probably have used it to create some great models. You love SketchUp’s price (free, or about $500 for the Pro version) and you certainly love SketchUp’s intuitive user interface. Dig beneath SketchUp’s deceptively simple surface, however, and you can unearth techniques that enable you to create stunning models and presentations that you thought only pricey modeling applications could produce.

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  • Remote sensing can be used to support a wide range of applications in Earth’s land surface information management. Typical applications concern, e.g., the mapping of changes due to the effects of pollution and environmental degradation over different periods of time, thanks to the high frequency of coverage of the Earth surface by satellites.

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  • Until about a century ago, the deep-ocean floor was completely inaccessible, hidden beneath waters averaging over 3,600 meters deep. Totally without light and subjected to intense pressures hundreds of times greater than at the Earth's surface, the deep-ocean bottom is a hostile environment to humans, in some ways as forbidding and remote as the void of outer space.

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  • Fractures are ubiquitous in the brittle lithosphere in the upper part of earth’s crust. They play a critical role in the transport of fluids. Moreover, all major discovered geothermal reservoirs and a considerable number of petroleum reservoirs are in fractured rocks. This restates the importance of studying multiphase flow behavior inside the opened fracture space. From the engineering point of view, a rock fracture as defined here is simply a complex-shaped cavity filled with fluids or solid minerals. Therefore it is understood to include cracks, joints, and faults.

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  • Terrain models have always appealed to military personnel, planners, landscape architects, civil engineers, as well as other experts in various earth sciences. Originally, terrain models were physical models, made of rubber, plastic, clay, sand, etc. Since the later 1950s, the computer has been introduced into this area and the modeling of terrain surface has since then been carried out numerically or digitally, leading to the current discipline— digital terrain modeling.

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  • Soil erosion affects a large part of the Earth surface, and it represents one of the most relevant environmental problems worldwide. Intense land degradation processes that destroyed civilizations in the past are still going on at present. Accelerated soil erosion is one of the main soil threats, as the natural balance between soil formation and loss may be seriously compromised, leading to desertification and permanent loss of fertility and protective function. Soil erosion is not only related to agricultural activities and farming practices, but also to land management in general....

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  • We are living in a computer-based world. Computer use in various fields has long ceased to be fashionable and has become almost a necessity. Since the early phases of design to the final implementation of a product, the computer has replaced traditional tools, providing efficient and elegant instruments. We can say, without fear of being wrong, that the strides that mankind has taken in recent decades is due largely to computer assistance.

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  • Satellite altimetry was developed in the 1960s soon after the flight of artificial satellites became a reality. From the vantage point in space, a radar altimeter is able to measure the shape of the sea surface globally and frequently. Such measurements have a wide range of applications to oceanography, geodesy, and geophysics. The results are often revolutionary. For example, in oceanography; it takes a ship weeks or months to cross the ocean making measurements while the ocean is constantly changing its circulation, temperature, and salinity.

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  • Anthropogenic air pollution constitutes of many substances. Greenhouse gases absorb and reflect some of the infrared parts of solar radiation reflected from the earth surface thus causing the troposphere to be warmer. Among others, these substances are carbone-dioxide, water vapour, hydrogen oxides, nitrogen-oxides and methane. Beyond causing warming, most of these gases are poisonous to the Earth’s biosphere. Besides greenhouse gases, there are a few more poisonous substances which have anthropogenic sources.

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  • Aluminum is the second most plentiful element on the earth and it became a competition in 19th century. The huge demand of aluminum is projected to get 70 million tons, over 30 millions being obtained from recycled scrap. The scope of aluminum ranges from household to space vehicles.

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  • When seen from space, “Planet Earth” is a mix of clouds, with the majority (two thirds) of the total surface under ocean water with the remaining third of land forming what we call continents, with various degrees of increasing albedo from open water bodies, vegetation, bare soil, rocks, deserts, and snow/ice packs. In a very short time (relative to Earth's age), the modern human civilization has conquered its neighboring space with probes, satellites, and vehicles carrying humans for exploration.

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  • Today, space technology is used as an excellent instrument for Earth observation applications. Data is collected using satellites and other available platforms for remote sensing. Remote sensing data collection detects a wide range of electromagnetic energy which is emitting, transmitting, or reflecting from the Earth's surface. Appropriate detection systems are needed to implement further data processing. Space technology has been found to be a successful application for studying climate change, as current and past data can be dynamically compared.

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  • In recent years, the awareness of water needs and processing requirement has become an increasingly important topic. As the earth's population increases the demand for "clean" water has become an even larger factor in residential as well as industrial and commercial costs. There are now almost no natural water sources that do not require some purific

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