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Environmental geology; definition and methods 6. Engineering and Environmental Geology.

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6.2. Subjects of environmental geology Environmental geology is applied geology. Specifically, it is the use of geologic information to help us solve conflicts in land use, to minimize environmental degradation, and to maximize the beneficial results of using our natural and modified environments. The application of geology to these problems includes the study of the following: 1. Earth materials, such as minerals, rocks, and soils, to determine how they form, their potential use as resources or waste disposal sites, and their effects on human health; 2. Natural hazards, such as floods, landslides, earthquakes, and volcanic activity, in order to minimize loss of life and property; 3. Land for site selection, land-use planning, and environmental impact analysis; 4. Hydrologic processes of groundwater and surface water to evaluate water resources and water pollution problems; 5. Geologic processes, such as deposition of sediment on the ocean floor, the formation of mountains, and the movement of water on and below the surface of Earth, to evaluate local, regional, and global change.
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Environmental geology; definition and methods 6. Engineering and Environmental Geology
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Page 1: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

Environmental geology; definition and methods

6.Engineering and Environmental Geology

Page 2: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

6.1. Fundamentals of environmental geology

The System of the Earth (FÖLDESSY 2011)

Page 3: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

6.2. Subjects of environmental geology

Environmental geology is applied geology. Specifically, it is the use of geologic information to help us solve conflicts in land use, to minimize environmental degradation, and to maximize the beneficial results of using our natural and modified environments. The application of geology to these problems includes the study of the following:1. Earth materials, such as minerals, rocks, and soils, to determine how they form, their potentialuse as resources or waste disposal sites, and their effects on human health;2. Natural hazards, such as floods, landslides, earthquakes, and volcanic activity, in order to minimize loss of life and property; 3. Land for site selection, land-use planning, and environmental impact analysis;4. Hydrologic processes of groundwater and surface water to evaluate water resources and water pollution problems;5. Geologic processes, such as deposition of sediment on the ocean floor, the formation of mountains, and the movement of water on and below the surface of Earth, to evaluate local, regional, and global change.

Page 4: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

Methods:

Field methods- trenching- drilling- geophysical methods- hydrogeological methodsLaboratory methodsMapping

„Köszörűkő” quarry, Lábatlan

Map of sensitivity of groundwaters (www.kvvm.hu)Trench excavating

Page 5: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

Types of environmental hazards:

Geological hazards

- volcanism- earthquakes- landslides

Antropogen environmental hazards

Page 6: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

Map of the Ring of Fire

Geological hazardsVolcanoes

Page 7: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

Volcanoes

Effusive volcanism, Mauna Kea Explosive volcanism

Lahar; Új-Zéland After the eruption of Merapi, 2010

Page 8: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

Earthquakes

Position of hypocentre and epicentre of the earthquakes (FÖLDESSY 2011)

Longitudinal and transversal waves (FÖLDESSY 2011)

Types of surface waves (FÖLDESSY 2011)

Seismograph; Miskolc, 2010

Geologic hazards

Page 9: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

Earthquakes

Earthquake at Chile, 2010 (meszarosmarton.wordpress.com)

Tsunami at Indonesia, 2004

Position of hypocentre and epicentre of the earthquakes (FÖLDESSY 2011)

Page 10: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

Landslidesslipping

creepingSlipping near to the tunnel

Creeping at Sumatra

Geologic hazards

Page 11: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

solifluction

soil creepSolifluction at Trondheim, Norway

Soil creeping at Telkibánya

Page 12: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

Antropogen environmental hazards

Red mud accident at Kolontár Soil degradation at deforested area; Henan, China

Soil degradation and secondary salinity Water pollution at the Raba river

Page 13: Environmental geology; definition and methods 6. Engineering and Environmental Geology.

Thank you for your attention!


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