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Wednesday, 25 March 2020

INTRODUCTIONTO GEOGRAPHIC INFORMATION SYSTEMS



INTRODUCTIONTO GEOGRAPHIC INFORMATION SYSTEMS



by Kang-tsung Chang, 9th Edition

Preface of the Book



A geographic information system (GIS) is a computer system for storing, managing, analyzing, and displaying geospatial data. Since the 1970s GIS has been important for professionals in natural resource management, land use planning, natural hazards, transportation, health care, public services, market area analysis, and urban planning. It has also become a necessary tool for government agencies of all levels for routine operations. The more recent integration of GIS with the Internet, a global positioning system (GPS), wireless technology, and Web service has found applications in location-based services, Web mapping, in-vehicle navigation systems, collaborative Web mapping, and volunteered geographic information.

Thursday, 19 March 2020

Hillslope Hydrology and Stability







Landslides occur when hillslopes become mechanically unstable, because of meteorological and geologic processes, and pose a serious threat to human environments in their proximity. The mechanical balance within hillslopes is governed by two coupled physical processes: hydrologic or subsurface flow and stress. 

Wednesday, 11 March 2020

Have your say: What is your best GIS Software?

Voice your opinion on the poll: What is your Best GIS Software?




What is your best GIS Software?

ArcGIS
Qgis
SAGA GIS
GRASS GIS
Other
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Learning Geospatial Analysis with Python








Learning Geospatial Analysis with Python: Understand GIS fundamentals and perform remote sensing data analysis using Python 3.7

This book is for Python developers, researchers, or analysts who want to perform geospatial modeling and GIS analysis with Python. Basic knowledge of digital mapping and analysis using Python or other scripting languages will be helpful.












Author(s): Joel Lawhead
Publisher: Packt Publishing, Year: 2019
ISBN: 1789959276, 978-1789959277



Tuesday, 10 March 2020

GIS Tutorial Basic Work Book 1






GIS Tutorial 1: Basic Workbook is the direct result of the authors' experiences teaching GIS to high school students in a summer program at Carnegie Mellon University, undergraduate and graduate students in several departments and disciplines at Carnegie Mellon University, as well as working professionals. 



GIS Tutorial 1 is a hands-on workbook with step-by-step exercises that take the reader from the basics of using ArcGlS Desktop interfaces through performing advanced spatial analyses.
Instructors can use this book for the lab portion of a GIS course, or individuals can use it for self-study. You can learn a lot about GIS concepts and principles by "doing" and we provide many short notes on a "just-in-time" basis to help this kind of learning. 

Monday, 9 March 2020

What is Remote Sensing





What is Remote Sensing?






"Remote detecting is the science (and somewhat, specialty) of gaining data about the Earth's surface without really being in contact with it. This is finished by detecting and recording reflected or transmitted Energy what's more, handling, breaking down, and applying that data."

Monday, 2 March 2020

Fault and Fault Terminology in Geology




What is Fault in Geology?





A fault is a fracture or region of fractures between two blocks of rock. Faults enable the blocks to pass relative to every other. This motion may appear rapidly, in the form of an earthquake - or may also happen slowly, in the shape of creep. 







Figure 1 Types of faulting in tectonic earthquakes,

Publisher
Encyclopædia Britannica, 2015




Faults may additionally vary in size from a few millimeters to thousands of kilometers. Most faults produce repeated displacements over geologic time. During an earthquake, the rock on one side of the fault suddenly slips with respect to the other. The fault surface can be horizontal or vertical or some arbitrary attitude in between.








Earth scientists use the angle of the fault with respect to the surface (known as the dip) and the direction of slip alongside the fault to classify faults. Faults which move along the direction of the dip airplane are dip-slip faults and described as either ordinary or reverse (thrust), depending on their motion. Faults which cross horizontally are regarded as strike-slip faults and are categorized as both right-lateral or left-lateral. Faults which exhibit each dip-slip and strike-slip action are recognized as oblique-slip faults.




Blue Economy - Are we ready for it?



Blue Economy - Are we ready for it?: Blue economy means extraction of the resources of sea for the growth of an economy. Bangladesh has settled maritime boundary disputes with Myanmar in 2012 and with India in 2014 through an arbitral method. It is estimated that Bangladesh has acquired 118,813 square kilometres of the Bay of Bengal. The areas of resources include 200 nautical miles of exclusive economic zone and over 354 nautical miles of resources on seabed (continental shelf). It is estimated that the resources from the sea of Bangladesh constitute 81 percent of the resources existing in its land territory.



Sunday, 1 March 2020

What is GIS? Component and Applications of GIS



What is GIS?







GIS, or geographic information systems, are computer-based equipment used to store, visualize, analyze, and interpret geographic data. Geographic data (also referred to as spatial, or geospatial data) identifies the geographic location of features.





These records consist of anything that can be associated with a region on the globe, or more in reality whatever that can be mapped. For example, roads, country boundaries, and tackle are all types of spatial data. 

A geographic Information system (GIS) lets in you to observe and explore everything about a place. 


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