Geography Current Affairs

Scientists develop new tool to improve monsoon forecast

Scientists from Florida State University in the US have developed new tool for objectively defining onset and demise of Indian Summer Monsoon (ISM) . The new method uses rainfall rates to mark span of ISM at any given location throughout affected region.

Significance

For generations, scientists have struggled to produce model for reliably defining duration of monsoon. No existing system has allowed researchers to reliably define parameters of season at fine scale as seen in this new model. Current weather forecasting and monitoring protocols focus attention on monsoon onset at one location, specifically in Kerala, and extrapolate for rest of region.

The new model takes into consideration specific locations by covering whole country, and objectively defines onset and demise dates for any given year. The new system ties onset of monsoon to location-specific rainfall thresholds and can work to allay confusion and frustration due to lack of clear, granular and objective benchmark for ISM onset and demise for all areas of country.

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CCEA approves survey project of Un-appraised Areas of Sedimentary Basins

The Cabinet Committee on Economic Affairs (CCEA) has approved survey project to acquire 48,243 Line Kilometer (LKM) 2D seismic data for appraisal of Indian sedimentary basins where limited data is available.

Sedimentary basin is a low area in the Earth’s crust, of tectonic origin, in which sediments accumulate. It can range from as small as hundreds of meters to large parts of ocean basins.

India has total 26 sedimentary basins covering area of 3.14 Million Sq Km (MSK) spread over onland, shallow water and deep water. 48% of total sedimentary basin area (about 1.502 MSK) does not have adequate geo-scientific data.

Key Facts

The project will be implemented by Oil India Limited (OIL) and Oil and Natural Gas Corporation (ONGC). Under it, survey work will be carried out in 24 States. OIL will conduct survey in North-Eastern States, while ONGC will cover remaining area. The entire project is likely to be completed by 2019-20.

After appraisal of these sedimentary basins, blocks will be offered for further exploration and production activities based on prospectivity of area. It will help in increasing the investments in domestic production of oil and gas and generate direct and indirect employment.

Significance

The appraisal of all unappraised areas is considered an important task to launch future Exploration and Production (E&P) activities. Data acquisition will provide initial insight into basins and help in planning future E&P activities. It will be useful in deciding focus areas of exploration activities in country and on basis of this primary data, E&P companies will be able take up further exploration activities in acreages allocated to them.

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