It seems impossible to understand the fluctuations of the market as it is now. Finding no specific article that explains what this could be due to. Should probably just stick to regular investments.
It was impossible to understand motions of celestial objects as well. I think this is typical market correction we see when something is undergoing adoption. Much like turbulence, we will see oscillations of people who want to transition between fiat and cryptocurrency. Human psychology (FOMO/FUD) tends to drive those oscillations as well. This isn't surprising since cryptocurrency is a speculative, unknown and misunderstood area -- people will be driven through emotions and irrational thought rather than sound utility or value based investment.
It may not be a single cause (like a single article) but it could be that the overall sentiment of the web is decreasing, which is causing people to get scared and sell their coins. One would have to actually calculate this.
But this oscillation is very real. For example, we can see positive sentiment come out, and other humans make it their job to fill the web with counteracting negative sentiment, etc. There are many complex factors that go into the price, and the web is merely a fraction of the input into the algorithm.