Nsdi vision and metadata

The National Geospatial Policy (NGP) is a strategic framework introduced by the Government of India to regulate, promote, and facilitate the development and utilization of geospatial data and services. The policy is designed to strengthen India's geospatial infrastructure, support decision-making, and drive economic growth, environmental management, and disaster response through the use of advanced geospatial technologies.

Key Components of the National Geospatial Ecosystem

1. Department of Science and Technology (DST) & National Spatial Data Infrastructure (NSDI)

Department of Science and Technology (DST) is the nodal agency responsible for coordinating geospatial activities in India. DST oversees the implementation of the National Spatial Data Infrastructure (NSDI).
National Spatial Data Infrastructure (NSDI) is a framework designed to facilitate the collection, sharing, and management of spatial data at different administrative levels, ensuring data interoperability and accessibility.

2. National Data Registry (NDR)

The National Data Registry (NDR) serves as a central repository where metadata about geospatial datasets is cataloged. It ensures that data users can locate, evaluate, and access the necessary geospatial information efficiently. NDR supports:

Metadata indexing: Providing essential details about available datasets.
Data discovery: Enabling users to search for relevant geospatial data.
Interoperability: Ensuring compatibility with different geospatial standards.

NSDI Vision and Metadata Standards

The NSDI Vision aims to ensure that geospatial data is:

Accurate and up-to-date: Reliable datasets that reflect real-world conditions.
Well-organized and accessible: Structured and standardized for seamless usage.
Available at multiple levels: From national to village level, to support development planning.

NSDI Metadata Standards

The NSDI Metadata Standards are based on international metadata frameworks such as:

ISO 19115 (Geographic Information – Metadata) – Defines standards for geospatial metadata.
FGDC (Federal Geographic Data Committee, USA) – Establishes geospatial metadata guidelines.
ANZLIC (Australia-New Zealand Land Information Council) – Defines best practices for spatial data sharing.
Dublin Core – Provides a general-purpose metadata standard.
CSDGM (Content Standard for Digital Geospatial Metadata, USA) – Defines metadata elements for spatial data.

Key Metadata Elements Defined in NSDI Standards

Metadata Category	Description
Availability	Specifies whether the geospatial data is publicly available or restricted.
Compliance	Ensures the dataset meets regulatory and technical standards.
Access	Defines how users can obtain the data (download, request, licensing, etc.).
Quality	Describes the accuracy, resolution, and reliability of the dataset.
Features	Lists the attributes and spatial properties of the data (e.g., roads, rivers, land use).
Lineage	Tracks the source, history, and transformation of the dataset over time.
Temporality	Indicates whether the dataset is static, periodic, or real-time.
Reference Systems	Specifies the coordinate reference system (CRS) used (e.g., WGS 84, EPSG codes).
Extent	Defines the geographic coverage of the dataset (regional, national, global).

Comments

Geography of Landslides. Mitigation and Resilience.

A landslide is a geological event in which a mass of rock, earth, or debris moves down a slope under the force of gravity. Landslides can range in size from small to large and can be triggered by natural events such as heavy rainfall, earthquakes, or volcanic activity, or by human activities such as construction or mining. The geography of landslides is affected by a variety of factors that can increase the likelihood of landslides occurring in a particular area. These factors include slope angle and steepness, the type of soil and rock present, the climate and weather patterns of the region, the presence or absence of vegetation, and human activities such as construction, mining, and deforestation. Areas with steep slopes are more prone to landslides because gravity has a stronger effect on loose soil and rock, making it more likely to move downhill. Similarly, areas with loose, sandy soil or weak, fractured rock are more prone to landslides because they are less stable and more easil...

Flood prone regions India

Floods are natural disasters characterized by the overflow of water onto normally dry land. Various factors contribute to floods, including intense rainfall, rapid snowmelt, storm surges from coastal storms, and the failure of dams or levees. The geographical explanation involves understanding the key components of flood-prone regions: 1. Proximity to Water Bodies: Flood-prone regions are often situated near rivers, lakes, or coastal areas. These locations are more susceptible to flooding as they are in close proximity to large water sources that can overflow during heavy precipitation or storms. 2. Topography: Low-lying areas with gentle slopes are prone to flooding. Water naturally flows to lower elevations, and flat terrains allow water to accumulate easily. Valleys and floodplains are common flood-prone areas due to their topographical characteristics. 3. Rainfall Patterns: Regions with high and concentrated rainfall are more likely to experience flooding. Intense and prol...

Geography of Flood. Types. Charector.

The geography of floods refers to the characteristics and patterns of floods in different geographic regions. Floods can occur in various landscapes, such as mountains, plains, coastal areas, and urban environments. The geography of a region plays a significant role in determining the frequency, magnitude, and impacts of floods. Some of the factors that influence the geography of floods include: Topography: The shape and elevation of the land can affect the flow and accumulation of water during a flood. For example, flat terrain can lead to slow-moving and widespread flooding, while steep slopes can result in flash floods and landslides. Climate: Regions with high rainfall or snowmelt can experience more frequent and intense floods, while dry regions may experience flash floods due to sudden, heavy rainfall. Hydrology: The characteristics of a river basin, such as its size, shape, and water flow, can influence the severity of a flood. For example, large river basins with extensive floo...

Landslides. USGS

Landslides. TYPES OF LANDSLIDES The term "landslide" describes a wide variety of processes that result in the downward and outward movement of slope-forming materials including rock, soil, artificial fill, or a combination of these. The materials may move by falling, toppling, sliding, spreading, or flowing. The animated GIF shows a graphic illustration of different types of landslides, with the commonly accepted terminology describing their features. The various types of landslides can be differentiated by the kinds of material involved and the mode of movement.

Prevention and Mitigation

In disaster management, prevention and mitigation are two fundamental strategies aimed at reducing disaster risks and their potential impacts. While both are proactive measures, they differ in scope and approach. 1. Prevention Prevention refers to measures taken to avoid or completely eliminate the occurrence of a disaster. It focuses on long-term strategies to ensure that hazards do not turn into disasters. Hazard Prevention – Actions taken to remove or reduce the presence of hazards (e.g., banning construction in earthquake-prone zones). Structural Prevention – Engineering solutions designed to eliminate hazards (e.g., building dams to prevent floods). Non-Structural Prevention – Policies, land-use regulations, and awareness campaigns to avoid exposure to hazards. Disaster Risk Reduction (DRR) – The systematic approach to identifying, assessing, and reducing risks of disasters. Zero Risk Approach – The idealistic goal of completely eliminating disaster risks, thoug...

Vineesh V, Geography

Search This Blog