Skip to main content

Disaster Management. GIS and Remote Sensing

Geographic Information Systems (GIS) and remote sensing technologies are becoming increasingly important in disaster management. They offer a range of tools and techniques that can be used to improve the speed and effectiveness of disaster response and recovery efforts.

GIS is a system that allows users to capture, store, analyze and manage geographic data. In disaster management, GIS can be used to create maps that show the location of critical infrastructure such as hospitals, fire stations, and evacuation routes. This information is invaluable in planning and coordinating emergency response efforts.

Remote sensing is the process of gathering data about an object or environment without physically being in contact with it. This is often done through the use of satellites or aerial photography. Remote sensing can be used to detect changes in the environment that might indicate the onset of a disaster, such as changes in sea level or vegetation cover.

In disaster management, GIS and remote sensing can be used in a number of ways, including:

Pre-disaster planning: GIS can be used to identify areas at risk of natural disasters such as floods, earthquakes, or hurricanes. This information can be used to develop emergency plans and evacuation routes.

Emergency response: GIS can be used to map the location of emergency responders, shelters, and supplies. This information can be used to coordinate response efforts and ensure that resources are allocated where they are needed most.

Damage assessment: After a disaster, GIS and remote sensing can be used to assess the extent of damage and prioritize recovery efforts. This information can also be used to identify areas where people may need assistance.

Recovery and reconstruction: GIS can be used to plan and coordinate reconstruction efforts. This can include identifying areas that need to be rebuilt, allocating resources, and tracking progress.

Overall, GIS and remote sensing play a critical role in disaster management by providing decision-makers with valuable information that can be used to improve emergency response efforts and facilitate recovery and reconstruction.

Comments

Post a Comment

Popular posts from this blog

Geology and Tectonic. Indian Shield

1. Ch (Chattisgarh Basin): Chattisgarh Basin is a geological region in central India known for its sedimentary rock formations. It's important for its mineral resources, including coal and iron ore. 2. CIS (Central Indian Shear Zone): CIS is a tectonic boundary in central India where the Indian Plate interacts with the Eurasian Plate. It's characterized by significant faulting and seismic activity. 3. GR (Godavari Rift): The Godavari Rift is a geological feature associated with the rifting and splitting of the Indian Plate. It's located in the Godavari River basin in southeastern India. 4. M (Madras Block): The Madras Block is a stable continental block in southern India. It's part of the Indian Plate and is not associated with active tectonic processes. 5. Mk (Malanjkhand): Malanjkhand is known for its copper deposits and is one of the largest copper mines in India. 6. MR (Mahanadi Rift): The Mahanadi Rift is a geological feature related to the rifting of the Indian Pl...
Post a Comment
Read more

Solar Radiation and Remote Sensing

Satellite Remote Sensing Satellite remote sensing is the science of acquiring information about Earth's surface and atmosphere without physical contact , using sensors mounted on satellites. These sensors detect and record electromagnetic radiation (EMR) that is either emitted or reflected from the Earth's surface. Solar Radiation & Earth's Energy Balance Solar Radiation is the primary source of energy for Earth's climate system. It originates from the Sun and travels through space as electromagnetic waves . Incoming Shortwave Solar Radiation (insolation) consists mostly of ultraviolet, visible, and near-infrared wavelengths . When it reaches Earth, it can be: Absorbed by the atmosphere, clouds, or surface Reflected back to space Scattered by atmospheric particles Outgoing Longwave Radiation is the infrared energy emitted by Earth back into space after absorbing solar energy. This process helps maintain Earth's thermal bala...
Post a Comment
Read more

Neighbourhood Operations

 Neighbourhood Operations in GIS? In GIS and raster data , neighbourhood operations look at a group of nearby pixels (not just one) to understand or change a pixel's value. Think of it like checking what's around a house before deciding what color to paint it! Why "Neighbourhood"? Each pixel has " neighbours " (just like how your house has nearby houses). Neighbourhood operations check these nearby pixels and do some calculation to get a new value. 1. Aggregations (Summarizing Nearby Values) Aggregation means combining values of several pixels into one. We do this to: Find the average of surrounding pixels Find the minimum or maximum value Smooth the map (make it less rough) 🧒🏻 Example: Imagine checking the test scores of 9 students sitting around you and finding the average score . That's aggregation!  2. Filtering Techniques Filtering is used to improve or highlight features in a raster image, just like f...
Post a Comment
Read more

Morpho-Tectonic Framework of India

The MorphoTectonic Framework of India refers to the combined study of the country's landforms (morphology) and its geological tectonic features. This framework provides insights into how geological forces have shaped India's topography over millions of years. Here's a breakdown of this concept: 1. Morphology: This aspect focuses on the physical features and landforms of India. It includes the study of mountains, plateaus, plains, valleys, rivers, and other surface features. For example, the Himalayas, Western Ghats, IndoGangetic Plains, and Deccan Plateau are prominent morphological features of India. 2. Tectonics: Tectonics deals with the movement and deformation of the Earth's lithosphere (the outermost rigid layer of the Earth). In the case of India, it primarily involves the interactions of the Indian Plate with neighboring tectonic plates. India is situated at the convergence of several major tectonic boundaries:     Collision with the Eurasian Plate: The most sign...
Post a Comment
Read more

EMR Spectrum Remote Sensing

The Electromagnetic Radiation (EMR) Spectrum is like a set of invisible waves that carry energy. In remote sensing , satellites and sensors use these waves to collect information about the Earth —like forests, water, cities, clouds, temperature, and more. Just like how our eyes can only see visible light (like colors in a rainbow), sensors in remote sensing can "see" many more types of waves that humans can't.  Types of EMR Used in Remote Sensing: Type of Wave Wavelength What It's Used For Example Visible Light 0.4 – 0.7 micrometers To take normal satellite images Google Earth pictures Near-Infrared 0.7 – 1.0 µm To check plant health Green areas, farming Shortwave Infrared (SWIR) 1.0 – 3.0 µm To see moisture in soil and vegetation Drought or wetness studies Thermal Infrared (TIR) 8.0 – 14.0 µm To measure surface temperature Heat from buildings, forest fires Microwaves 1 mm – 1 meter To see through clouds and at night (radar) Flood detection, weather, disaster...
Post a Comment
Read more