Satellite Image Quiz 2019

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The conference topic THE Spatial View is reflected in this year’s UNIGIS satellite image quiz. You see exclusively freely available images, which are produced from remotely sensed data. Answer the following questions and win attractive prizes. All participants who correctly answer the questions are considered for the raffle of an annual subscription of the GIS Business and AGIT souveniers.

Privacy Note: By taking part in this quiz you allow us to collect and process your email address for the purpose of contacting you in case you are the lucky winner. We will delete your email address afterwards and will not use it for any other purpose.

This Landsat-8 satellite image shows numerous landslides that where triggered by heavy rainfall. In this false-colour visualisation, they are visible as bright areas distinct from the vegetation, which is coloured in red. Where is the image located? *

Austria

Portugal

Kenya

Taiwan (R.O.C.)

Large River Deltas are unique ecosystems and support a broad range of plant and animal species. Which River Delta is shown on this image? *

Nile Delta

Lena Delta

Ganges Delta

Danube Delta

This image was captured on the 7th of March 2019 of an area, which is usually covered by sea ice at that time of year. The National Snow & Ice Data Center reported this extent being the lowest within the 40 years of satellite recording. Which sea passage is shown here? *

Bering Strait

Northwest Passage

Cabot Strait

Strait of Malacca

Night shots like these show the distribution where people live. Especially cities are bright and easily visible. What is the percentage of people living in cities? *

Less than half

About half

More than half

There is no estimate

This image was captured by the Sentinel-5p satellite and shows high records of a particular gas in areas such as London, Brussels, western Germany, Milan, and Moscow. These high levels are due to air pollution and have an impact on human health. Which gas is it? *

Nitrogen dioxide

Oxygen

Carbon dioxide

Ozone

Thermal images show the thermal radiation of the Earth as shown in the image of Sicily. The temperature differences to the surrounding Mediterranean Sea are clearly visible. This image was taken by the Sentinel-3 satellite. Which natural phenomenon is also visible in this image? *

The cold Humboldt stream (here diagonally visible in white) flows through the Strait of Messina and supplies the southern Mediterranean with cold water.

Etna, which is never resting and currently has the status of "minor activities", is clearly visible as a reddish point in the north of Sicily.

In recent decades, the hilly area in the center has heated up much faster the areas on the coast (caused by climate change).

The solar activity varies not only temporally, but also spatially. The so-called "sunspots" cause local radiation fluctuations, which are visible as dark or black areas.

Permafrost landscapes, like this one on the North Slope of Alaska, cover large parts of the Earth’s surface. Which percentage of the Northern Hemisphere’s landmass is underlain by permafrost? *

~ 12%

~ 21%

~ 38%

~ 55%

The light turquoise coloring of the eastern coast of the southern island of New Zealand is caused by sediments and algal blooms in the water. What causes these algal blooms? Through a strong growth of algae due to ... *

low water circulation and high water temperatures.

strong water circulation and high water temperatures.

low water circulation and low water temperatures.

strong water circulation and low water temperatures.

This island is inhabited by people who want to avoid any contact with the outside world and are among the few tribes that have successfully resisted the influence of the outside. The island bears the same name as Earth observation satellites. What is its name? *

"Chankute" (can be translated as a planet)

South Proba Island

North Sentinel Island

Terra Tristis

These round fields are created by an irrigation system in which an irrigation arm rotates around a base. This is also known as pivot irrigation system. In Egypt, the irrigation of agricultural land has been in use for some time. Early on, they developed a sophisticated system where basins were used that were flooded once a year by the Nile. Since when do the Egyptians use artificial irrigation systems? *

3000 BC

1500 BC

15 BC

200 AD

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