The South African National Space Agency (SANSA) was established in 2010. Following a period of rapid growth and transition the agency has made significant advancements towards addressing its mandate of deriving greater value from space science and technology for the benefit of South African society.

Strongest solar flare in over a decade

on . Posted in Space Science

MEDIA RELEASE

From the Regional Space Weather Warning Centre of the South African National Space Agency

For Immediate Release

Hermanus, South Africa, 08.09.2017

SA Space Agency monitoring strongest solar flare in over a decade  

Our life giving star, the Sun, has unleashed two massive solar flares, the second of which is the strongest flare in over a decade. The burst of radiation was so intense, it caused high frequency (HF) radio blackouts across the daytime side of Earth affecting HF communication over Africa, Europe and the Atlantic Ocean.

The first flare erupted on 6 Sep 2017 from active region 2673 and measured in at X 2.2. Hot on its heels, another flare blasted off the Sun three hours later, measuring in at a whopping X 9.3 - the most powerful flare since 2005.

Solar flares are giant explosions on the surface of the Sun that occur when twisted magnetic field lines suddenly snap and release massive amounts of electromagnetic energy. Five categories — A, B, C, M and X — are used to rank solar flares based on their intensity. A-Class flares are the weakest, while X-Class are the most energetic.

The solar flares were accompanied by a coronal mass ejection (CME) which travelled towards Earth at speeds over 1200 km per second and impacted the Earth's magnetic field early morning on 8 Sep 2017. The impact of the CME has sparked a strong (G3) geomagnetic storm on Earth which can have effects on HF communication, power grids, navigation systems such as GPS, and communication systems such as DStv, mobile phones and internet connectivity. Moderate disturbances are expected at this stage. The storm will gradually subside over the next 24 hours.

SANSA-JICA collaboration for Earth observation capacity building

on . Posted in SANSA Earth Observation News

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In line with SANSA's mandate to expand human capacity development opportunities to the public sector and the entire Earth observation community in South Africa, the agency took a delegation of ten SA scientists to Japan for a four weeks training expedition.

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