Earthquakes

Magnitude 5+ Earthquakes – Global

7.2 Earthquake hits Mindanao in the Philippines.

Following a tsunami warning, the occurrence of sea level disturbance was confirmed by records of the Sarangani sea level monitoring station showing a drop of approximately 30cm and a maximum rise of approximately 10cm wave height relative to normal sea level. Several buildings were damaged and two people injured as panicked residents fled the coast following the tsunami warning.

2017 04 29T045123Z 1446179874 RC13DCF1EFF0 RTRMADP 3 PHILIPPINES QUAKE 29 04 2017 06 04 06 572

5.8 Earthquake hits Valparaiso, Chile.

5.5 Earthquake hits offshore Valparaiso, Chile.

5.4 Earthquake hits Java, Indonesia.

5.4 Earthquake hits offshore Valparaiso, Chile.

Two 5.2 Earthquakes hits offshore Valparaiso, Chile.

5.1 Earthquake hits offshore Valparaiso, Chile.

5.1 Earthquake hits Lake Tanganyika.

5.0 Earthquake hits Colombia.

5.0 Earthquake hits the Ryukyu Islands off Japan.

5.0 Earthquake hits offshore Valparaiso, Chile

Earthquakes

Magnitude 5+ Earthquakes – Global

5.8 Earthquake hits Lake Tanganyika, Africa.

5.4 Earthquake hits eastern New Guinea, Papua New Guinea.

5.3 Earthquake hits south of Fiji.

5.3 Earthquake hits the South Sandwich Islands.

5.2 Earthquake hits Vanuatu.

5.1 Earthquake hits southern Peru.

5.0 Earthquake hits north of Severnaya Zemlya.

5.0 Earthquake hits northern Sumatra, Indonesia.

Global Warming

Has global warming killed off the fish in Africa’s deepest lake?

Clmiate change may have been the key cause of the decline of fisheries in east Africa’s Lake Tanganyika rather than just overfishing, a new study has found.

The lake’s fish are a critical part of the diet of neighbouring countries, Burundi, the Democratic Republic of Congo, Tanzania and Zambia, providing up to 60 percent of the animal protein consumed in the region and it also is an important biodiversity hotspot.

There have been growing concerns about the impact of overfishing, land use changes and changes in climate on this key ecosystem.

But the study by the US’s National Academy of Sciences shows that the abundance of fish began declining in the 1800s when the lake’s temperature began increasing.

Large-scale commercial fishing in the area did not start until the 1950s, so that is why the rising surface temperature is more likely to blame for the decline in fish productivity.

What we’re seeing on the lake now, the fishermen are starting to catch juveniles and, once you start to catch juveniles, the fish population will start to decrease very dramatically and so in a relatively short time period, we could end up with fish stocks that, through a combination of overfishing and this climate change impact, could become very small.

The stratification of the lake has something to do with oxygen concentration that the fish need and so as the stratification moves up and down in the lake, the size of the lake obviously changes as well and so does the amount of oxygen-rich water for the fish.”

As a result, fewer nutrients from the bottom reach the top, making less algae, which serve as food for the fishes.