Navigation System Current Affairs - 2020

Indian Scientists Discover model to predict Ionospheric Electron Density

The Indian Institute of Geomagnetism researchers have developed a model that will predict electronic density of ionosphere. This is highly important for the communication and navigation on the earth.


The researchers developed an Artificial Neural Networks based Global Ionospheric Model (ANNIM) to predict ionospheric electron density. The model was developed by using data collected for more than 20 years.

Artificial Neural Network

The ANNs mimic the process of human brain. They help in clustering, recognition, generalization, classification and non linear data fitting. It captures morphological features of ionosphere. This is highly helpful to study changes in the ionosphere due to disturbed weather periods that has been on the rise lately. It also helps to learn about geomagnetic storms that occur due to the magnetic clouds that originate from the sun.

Magnetic Storm

The Magnetic storms are rapid change in huge magnetic fields. They can last from hours to days. A magnetic storm on the earth’s magnetosphere is caused by solar winds.

European Project linking Black sea, North Sea and Baltic Sea criticized by Environmental Organization

The Danube-Oder-Elbe canal intends to connect the three rivers Danube, Oder and Elbe. This is to provide an alternate route of navigation from Black sea to Baltic and North seas. However, several concerns are being raised by the environmental organizations against the construction of the canal.


According to the activists, the project violates European Union Environmental conservative directives. the major project is to cost at least 23 billion Euros. The activists want the project to be excluded from EU funding. They also do not want the project to be included in the Trans-European Transport Network.

What are the concerns?

In order to complete the project, several hundred artificial waterways have to be built. As the canal is being construct for ship navigation, more than 70 locks have to be built that will accelerate flood waves. The riverbeds need to be deepened for the ships to navigate. This will increase risks of flooding. The canal will also destruct habitat of several plants and animals. It will make endangered animal and plant species to go extinct.