In September last year, Christchurch was rocked by a major earthquake that reached a whopping 7.1 on the Richter scale and revealed fault lines that geologists had no idea were even there. Six months later in February this year, we were rocked again by a magnitude 6.3 - less powerful than the first but it was centred at a much shallower depth and therefore caused much greater damage to the city. Furthermore, 181 people lost their lives. Then in June we had yet another shallow 6.3-magnitude quake which caused further damage to the already devastated city. And then, after six months of relative calm, today happened.
At 1:58pm, I was reversing the car after just picking up my brother, Jared, from his flat, en route to his Christmas work drinkies. At first I thought I had a flat tyre, and then I heard weird noises from my open window which made me think I was running something over. A second later I clicked what was happening. The first big quake of the day was a magnitude 5.8, 8km deep, and centred 20km northeast of Lyttelton just off shore in the Pacific Ocean. Power went out in several areas across the city, shopping malls in the middle of one of their busiest days of the year were hastily evacuated, and people started to panic all over again.
At 2:06pm, we were stopped at a red light and the car started to shake again. This time it was a magnitude 5.3. I looked at the driver of the stationary car next to me, and he looked back at the same time. I made a wavy gesture with my hand and he nodded back at me hehe.
At 3:18pm, Kristina and I had left Jared to his work drinks and hit the road again to have a look around the city. We were driving at about 60km/h and listening to a local radio station. The DJ happened to be talking at the time, and with a lot of fear in his voice he suddenly paused and said "We're having another shake!" before going silent except for all the noise in the background. The car lurched violently from side to side for around ten seconds. I took my foot off the gas and let the car slow on its own while trying to hold it straight; some chick in the opposite lane on the other hand simply slammed on the brakes hehe (generally not a good idea). This was the largest of the day at 6.0.
At 4:50pm we were still driving in the car, and that same DJ was still trying to keep his fan base calm. While in the middle of a phone call from a listener he cut her off and said "We're having another one". Kristina and I didn't feel this one, but it was a magnitude 5.0, i.e. half as powerful as the 6.0 earlier (the Richter scale is a base-10 logarithmic scale).
It's now 10pm as I write this and have only felt one further very small shake. Our Boxing Day last year was rife with shaking and it may well be the same this year. I say "we" and "our" but I was in London and Paris when all this was happening. Until today I thought I'd missed all the action, but according to geologists these are new quakes as oppossed to aftershocks of the original September shake as the others have been. That being the case, there are likely to be many more in the days to come.