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Showing posts from February, 2025

Explore the Earth, Maps and Satellite Images

Google Maps and Google Earth are very common platforms today to explore maps and satellite images of the earth. But there are many other ways to explore the earth. Some are listed here.  1.   Earth Explorer This map is developed by USGS helpful to obtain earth imagery across available geo-spatial data types. Users can navigate via interactive map or text search to obtain Landsat satellite imagery, Radar data, UAS data, digital line graphs, digital elevation model data, aerial photos, Sentinel satellite data, some commercial satellite imagery including IKONOS and OrbView3, land cover data, digital map data from the National Map, and many other datasets. Users can search by exact location via the interactive map or input specific coordinates to view what data types are available. 2.   Sentinel Hub This platform developed by  Sinergise has Sentinel, Landsat, and other Earth observation imagery easily accessible for browsing, visualization and analysi...

Using matplotlib in python for data visualization

#libraries import pandas as pd #matplotlib has several module, for charts/graphs we use pyplot import matplotlib.pyplot as plt #graph function from plt  Chart type Chart code Line chart plt.plot() Scatter plot plt.scatter() Bar chart plt.bar() Pie chart plt.pie() Histogram plt.hist() Add a title plt.title() Add a legend plt.legend() Add axis labels plt.ylabel(), plt.xlabel() Adjust axes plt.xscale(), plt.yticks() Print graph plt.show()

Topographical Map of Chitwan-Madi-Thori Area Compiled

 

EARTHQUAKE DISASTER MANAGEMENT

Nepal Himalaya lies in the active seismic belt. Seismicity in the Himalaya is the consequence of the collision of the Indian Plate with Eurasian plate. Nepal is exposed to most disaster types including earthquakes, floods, landslides, droughts, storms, avalanches, hailstorms, fires, epidemics and ecological hazards. A wide range of physiological, geological, tectonic, ecological, meteorological and demographic factors contribute to the vulnerability of the country. Earthquake can neither be predicted nor stopped the only way to minimize its impact is to take safety measures. HISTORICAL AND PAST DEVASTATING EARTHQUAKES IN NEPAL Source: Historical Earthquakes of Nepal ORGANIZATIONAL STRUCTURE FOR DISASTER MANAGEMENT The National Council for Disaster Risk Reduction and Management, chaired by the Prime Minister, and the Disaster Risk Reduction and Management Executive Committee, chaired by the Home Minister, are the top policy bodies for disaster management. Under them, the National Disast...

Biostratigraphy

  Biostratigraphy.  The element of stratigraphy that deals with the distribution of fossils in the stratigraphic record and the organization of strata into units on the basis of their contained fossils. Biostratigraphic classification.  The systematic subdivision and organization of the stratigraphic section into named units based on their fossil content. Biostratigraphic zone (Biozone).  A general term for any kind of biostratigraphic unit regardless of thickness or geographic extent.   Biozones vary greatly in thickness, geographic extent, and represented time span. Biostratigraphic horizon (Biohorizon).  A stratigraphic boundary, surface, or interface across which there is a significant change in biostratigraphic character.  A biohorizon has no thickness and should not be used to describe very thin stratigraphic units that are especially distinctive   Kinds of Biostratigraphic Units Five kinds of biozones are in common use: range zo...

Himalayan range, Himalayan Orogen, and Himalayan tectonic system

According to Yin 2006, the Himalaya has been politically, geographically, structurally, and stratigraphically defined. Geographically, the Himalayan range lies between its eastern and western syntaxis as represented by the Namche Barwa and Nanga Parbat peaks. The Himalayan orogen is defined by the Indus– Tsangpo suture in the north, the left-slip Chaman fault in the west, the right-slip Sagaing fault in the east, and the Main Frontal Thrust (MFT) in the south. The Himalayan tectonic system is a broader concept than the Himalayan orogen. It consists of the Himalayan orogen, the active Himalayan foreland basin (=Indo-Gangetic depression), and the Indus and Bengal Fans. All of these features were produced by the Indo-Asian collision.

Fossils from Nepal Himalaya

  Siwalik Fossils Plant fossils, Vertebrate fossils and ostracods. Vertebrate fossils have been recorded from Babai, Tui, Surai, Tinau and Rato Khola area. 2. Plant fossils in Lower Siwalik and correlable rocks. •         Bambusa siwalika •         Polyalthya palaeosimiarum •         Dipterocarpus siwalikus 2.       Fresh water Ostracods from Butwal area. Fossils of Tansen Group Sisne : Bryozoa; Genera Fenestella, Polypora, Acantholcladia ( Carboniferous to Permian) Taltung : Bennettitales and Ficlaes. Ptilophyllum sp., Pterophyllum sp., Cladophrebis sp., Elatocladus sp, Pterodospermae ( L. Jurrasic to E. Cretaceous) Amile : Shark teeth, vertebrate bone fragments, gastropods, pelecypods, echinoids Bhainskati : Nummulites and Assilina, Bivalves, vertebrate bone fragments. Dumri :...

Popular posts from this blog

Geological Maps of Nepal

  List of geological maps different parts of Nepal . Geological Map of Nepal Geological Maps Of Seven Provinces, Nepal Geological Map of Kathmandu Area and Central Mahabharat Range (Stocklin and Bhattarai, 1980) Photogeological Map of Central Nepal (Stocklin and Bhattarai, 1982). Geological maps of 1:50,000  of different parts of Nepal published by DMG. Engineering Geological and Environmental maps of different cities of Nepal published by DMG. Mineral Resources map of Nepal Epicenter map of Nepal Himalaya

Explore the Earth, Maps and Satellite Images

Google Maps and Google Earth are very common platforms today to explore maps and satellite images of the earth. But there are many other ways to explore the earth. Some are listed here.  1.   Earth Explorer This map is developed by USGS helpful to obtain earth imagery across available geo-spatial data types. Users can navigate via interactive map or text search to obtain Landsat satellite imagery, Radar data, UAS data, digital line graphs, digital elevation model data, aerial photos, Sentinel satellite data, some commercial satellite imagery including IKONOS and OrbView3, land cover data, digital map data from the National Map, and many other datasets. Users can search by exact location via the interactive map or input specific coordinates to view what data types are available. 2.   Sentinel Hub This platform developed by  Sinergise has Sentinel, Landsat, and other Earth observation imagery easily accessible for browsing, visualization and analysi...

Geology Of Nepal

The Himalaya was formed due to collision of Indian Plate and Eurasian Plate at about 40 million years ago. It extends in 2400km east - west direction. Its width varies from 230 to 320 km and bounded between the Indo-Gangetic Plain in the south and Tibetan Plateau in the north. Nepal Himalaya occupies the central 800km part. Heim & Gansser 1939 , and Gansser 1964 divided the rocks of the Himalaya into four tectonostratigraphic zones that are characterised by distinctive stratigraphy and physiography. From south to north, it can be divided into five latitudinal morpho-tectonic zones and these are : 1. The Gangatic Plain (Terai) 2. The Sub Himalayan (Chure or Siwalik) 3 Lesser Himalayan (Mahabharat Mountain Range), 4. Greater Himalayan, and 5. Tibetan Himalayan zones (Tethys Himalaya). Each of these zones is clearly identified by their morphological, geological and tectonic features. Main Frontal Thrust (MFT), Main Boundary Thrust (MBT), Main Central Thrust (MCT) and South Tibetan ...