Tag Archives: types

Two types of tectonic plate activity create earthquake and tsunami risk on Lombok

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Jane Cunneen, Curtin University and Phil R. Cummins, Australian National University

Several large earthquakes have struck the Indonesian island of Lombok in the past week, with the largest quake killing at least 98 people and injuring hundreds more.

Thousands of buildings are damaged and rescue efforts are being hampered by power outages, a lack of phone reception in some areas and limited evacuation options.

The majority of large earthquakes occur on or near Earth’s tectonic plate boundaries – and these recent examples are no exception. However, there are some unique conditions around Lombok.

The recent earthquakes have occurred along a specific zone where the Australian tectonic plate is starting to move over the Indonesian island plate – and not slide underneath it, as occurs further to the south of Lombok.

This means there is earthquake and tsunami risk not only along the plate boundary south of Lombok and Bali, but also from this zone of thrusting to the north.



Read more:
Bali’s Agung – using ‘volcano forensics’ to map the past, and predict the future

Jammed subduction zone

Tectonic plates are slabs of the Earth’s crust that move very slowly over our planet’s surface. Indonesia sits along the “Pacific Ring of Fire” where several tectonic plates collide and many volcanic eruptions and earthquakes occur.

Some of these earthquakes are very large, such as the magnitude 9.1 quake off the west coast of Sumatra that generated the 2004 Indian Ocean tsunami. This earthquake occurred along the Java-Sumatra subduction zone, where the Australian tectonic plate moves underneath Indonesia’s Sunda plate.

But to the east of Java, the subduction zone has become “jammed” by the Australian continental crust, which is much thicker and more buoyant than the oceanic crust that moves beneath Java and Sumatra.

The Australian continental crust can’t be pushed under the Sunda plate, so instead it’s starting to ride over the top of it. This process is known as back-arc thrusting.

The data from the recent Lombok earthquakes suggest they are associated with this back-arc zone. The zone extends north of islands stretching from eastern Java to the island of Wetar, just north of Timor (as shown in map below).

Earthquake hazards along plate boundaries near Indonesia. The dates in the map show historical earthquakes, and Mw indicates earthquake magnitude.
Edited by P. Cummins from an original by Koulali and co-authors

Historically, large earthquakes have also occurred along this back-arc thrust near Lombok, particularly in the 19th century but also more recently. (Dates and sizes of past earthquakes are shown in the map above).

It is thought that this zone of back-arc thrusting will eventually form a new subduction zone to the north along from eastern Java to the island of Wetar just north of Timor.



Read more:
I’ve always wondered: do nuclear tests affect tectonic plates and cause earthquakes or volcanic eruptions?

Tsunami risk

Lombok’s recent earthquakes – the August 5 6.9 magnitude quake plus a number of aftershocks, and the 6.4 magnitude earthquake just a week before it – occurred in northern Lombok under land, and were quite shallow.

Recent earthquakes on Lombok were also felt on the neighbouring island of Bali.
US Geological Survey

Earthquakes on land can sometimes cause undersea landslides and generate a tsunami wave. But when shallow earthquakes rupture the sea floor, much larger and more dangerous tsunamis can occur.

Due to the large number of shallow earthquakes along the plate boundaries, Indonesia is particularly vulnerable to tsunamis. The 2004 Indian Ocean tsunami killed more than 165,000 people along the coast of Sumatra, and in 2006 over 600 people were killed by a tsunami impacting the south coast of Java.



Read more:
Explainer: after an earthquake, how does a tsunami happen?

The region around Lombok has a history of tsunamis. In 1992 a magnitude 7.9 earthquake occurred just north of the island of Flores and generated a tsunami that swept away coastal villages, killing more than 2,000.

Nineteenth century earthquakes in this region also caused large tsunamis that killed many people.

The areas around Lombok and the islands nearby, including Bali, are at high risk for earthquakes and tsunamis occurring both to the north and the south of the island.

The ConversationUnfortunately, large earthquakes like the ones this week cannot be predicted, so an understanding of the hazards is vital if we are to be prepared for future events.

Jane Cunneen, Research Fellow, Curtin University and Phil R. Cummins, Professor, Australian National University

This article was originally published on The Conversation. Read the original article.

How an Australian-born pastor survived a Molotov cocktail

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Wayne Zschech, the Australian-born pastor of Calvary Chapel Kaharlyk, just south of Kiev in Ukraine with a population 15,000, says he will never forget the events that took place in the early hours of Wednesday, October 14th, when attackers smashed a window at the church building, where he and his family live, and threw a Molotov cocktail (petrol bomb) into the building, reports Dan Wooding, founder of ASSIST Ministries.

In an interview he gave me during my recent visit to Kiev, he re-lived the horrifying turn of events that could have caused the deaths of himself and his family as they slept.

“It all started when my wife Olya woke up in the morning to feed the newborn baby and she said she could smell smoke,” said Wayne. “We actually live in the church building and that night, there were six of us (including his mother-in-law) who were sleeping. We had actually sent the kids to school at eight o’clock in the morning and my wife said again that she could ‘really smell smoke.’ So we looked out the back window and there was smoke billowing out of the back of the church.

“Suddenly, it was all hands on deck. I called the fire brigade and then started finding where the fire was coming from. We originally thought that it was an electrical short because it’s an old building. I began opening up all the doors – because I didn’t want the fire brigade knocking them down – and looking in the basement trying to find where the fire was coming from.

“I kept going down into the basement and when I came up for air on the third or fourth occasion, I just happened to walk around the side of the building and suddenly the whole situation became clear. Someone had thrown a Molotov cocktail through the side of the building into our children’s ministry room and had also left spray painted markings on the side of the building saying, ‘Get out of here, you sectarians.’ So suddenly it put a big a whole new spin on the situation.”

I asked Wayne if he had ever experienced trouble before and he replied, “Not directly. We’ve had a couple of youths smashing windows and so we had to put security screens on our apartment, but nothing like this. There was no warning.”

Sitting next to Pastor Zschech was his assistant pastor, American-born Micah Claycamp, who is married with four children, who then described what he saw when he arrived at the church that morning.

“I had come to the church to do a language lesson and, as I walked in, I saw a big hose running from the back of the church into the room that had been firebombed and I could smell smoke,” he said. “They had just finished cleaning everything up and I went around to the side of the building and saw what had been spray painted and started talking to Wayne who had got the situation figured out and he told me what exactly had happened.

“This was the first big thing we’ve seen in our town. It is pretty quiet for the most part. I don’t feel threatened living there but this obviously is a situation that is a lot different and when you walk into something like this it makes you appreciate the things that you see God do, the unseen things. It makes you realize how much God protects our lives in ways you don’t see every day. So it just makes you more appreciative of His protection.”

I then asked Wayne how an Australian from Brisbane whose family hailed from the Prussian part of Germany finished up in a small town in Ukraine.

“Well, to be perfectly honest, I think God played a trick on me,” he smiled. “I graduated from school and wanted to get into the Royal Australian Air Force (RAAF) and when I applied for the Australian Defence Force Academy I got the chickenpox and so they didn’t let me in that year, even though my academic achievements were fine.

“So I quickly did a deal with God and said, ‘I’ll give you a year of my life’ and the next thing I knew three months later I was in Ukraine and started a Bible-based English schooling programs in communist government schools where kids were learning about Jesus. I was just seventeen years old at the time and began travelling all over the country and I’ve been here ever since. That is some sixteen and a half years now.”

Had he seen big changes in the country?

“Yes, many changes,” he said. “We’ve had currency changes and also seen mindset changes. We see economic things going on and we’ve learned a lot of things. But along the way, I found a beautiful Ukrainian girl and we have a wonderful marriage and we have three Ukrainian kids.”

Wayne then spoke about how he got involved in this Calvary Chapel.

“Well, I got tricked also into becoming the pastor of this church in what was then a village,” he said. “The founding pastor who moved with me from Kiev to Kaharlyk went back home to Australia to do his deputation work and a couple months later, he wrote me an email saying that he was ‘not returning to be the pastor of the church.’ He added, ‘So congratulations. You’re the pastor.’ So not only did I become a missionary by hook or by crook but also became a pastor and I’m thrilled.

“I never wanted to be those things but God has turned things around totally and I’m absolutely content and happy and it’s a very exciting life to see what God is doing despite the fact that humans would have had other choices.”

I then asked Wayne what Kaharlyk was like when he first arrived.

“We are about 80 kilometers (nearly 50 miles) south of Kiev and it was a town that had been in economic ruin as most of the country had been after the collapse of the Soviet Union,” he said. “Unemployment was rife. There were no jobs, no income and there was lots of mental and cultural baggage as the country was trying to reacclimatize to the real world situation.

“Now some 12 years later, we’re basically on the outskirts of Kiev although obviously the town hasn’t moved geographically. But it’s a thriving little town. It hasn’t grown numerically that much but you can definitely see there are changes. There are people moving out of Kiev to come and live in our town. That was never in our plan and we’re also seeing bits of investment coming in and things like that show what was once basically dead is now starting to show signs of life.”

I then asked him to describe the types of people who attended his church.

“We’re a young church and we’re different from the mainstream Orthodox and older style Baptist churches,” Wayne explained. “But the truth is that we are reaching out to orphans, to the elderly and we have a beautiful mix of all those generations in between. When you see a grandmother coming with her son and her grandson to church, you see the wholesomeness that the Gospel brings when God enters a family’s life.

“Back in the early days everyone was warned about people like us saying that these are the people ‘you’ve been warned about for all those years’ and that ‘they’ve come here to hypnotize you and take all your money.’ But that was more then based out of ignorance.

“We had an Orthodox priest back then and we had some very serious chats with him and he said, ‘Look publicly, I have to hold the government line or the Orthodox line, but personally I see that you’re a brother in Christ. So that was good. I wouldn’t call that major persecution, but I can understand the fear from their side.”

He then spoke about a unique business he has begun in the town.

“We decided that we had to become producers so people can put bread on the table and we have to show how God is in everything,” said Wayne. “So we have started a little mushroom-growing enterprise and now we’re making biodiesel. We actually collect oil from a number of restaurants, including McDonald’s Ukraine, and we make biodiesel and sell it and save money for the church and make money for the church and employ people and reinvest into the local town.”

Micah then said that he runs his car on biodiesel which he says smells like “fried chicken.”

“I can run it and I haven’t had any problems at all,” he said. “It’s also cheaper and I’ve put advertisements on the van to let people know the phone numbers so that people know what’s going on.”

It was Micah that picked me up at the Kiev (Borispol) Airport and drove me to my hotel and I have to confess that I didn’t catch a whiff of fried chicken from the exhaust of the van, though I did have a bad cold at the time.

I concluded by returning to the topic of the firebombing and asked Wayne if he had further thoughts about it.

“As soon as we discovered that it was intentional, you can just imagine the situation in your mind with totally charged different emotions,” he said. “We were targeted from the side of the building so that everyone in the town walking past it could see the damage and the spray painting.

“It was basically a political statement in that respect. The fact that the family was asleep in the building when it happened my mother in-law was staying at the time and she said that she heard some banging around at five o’clock in the morning and we looked at the fire damage and we see that it was a real a miracle. There was a fire but the damage was minimal. It should have been so much worse. What turned out to be a couple thousand dollars worth of damage when we could have lost the whole room.

“If they, for some, reason had chosen another window to throw it in, just the next window, the floor boards are totally bear there we don’t have thick linoleum on them, so the fire would have spread immediately. There’s a big air gap right under those boards and it runs right to our family’s bedrooms.”

I concluded by asking Wayne what his prayer needs were at this time.

“That Christ would be glorified to the maximum through this and the next circumstances and that He would save people and that the Christian body locally and throughout the world would pray harder to understanding the privileges that we have in our situations and that God can change them any time that He wants.”

Micah then added his prayer request: “That our church would grow together in this as they would see that God allows these things to happen to strengthen the body, to cause our eyes to be back upon Him and that for His glory to be done and bring more people to Christ.”

By the way if the name Zschech rings a bell with you, he is related to Darlene Zschech, who is perhaps most famous for the chorus "Shout to the Lord," a song that is sung by an estimated 25 to 30 million churchgoers every week, who has married in the Zschech family. “I was a Zschech first,” laughed Wayne.

Report from the Christian Telegraph 

RELIGION IS ALIVE AND WELL – CHRISTIANITY ON THE OTHER HAND…

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Religion is alive and well in Australia. Christianity on the other hand is not doing anywhere near as well.

If Christianity is to be measured by the Bible and not by mass opinion in churches (or by some other measure such as professing Christians, etc), the Australian experience of Christianity is not too good at all. In fact, most of what goes by the name of ‘Christian’ is anything but Christian in the Biblical sense.

Automatically I would count out all the usual cults and heretical groups, such as the Mormons and Jehovah’s Witnesses. There is of course a possibility that some within the confines of such heretical groups are indeed saved, but it is difficult to believe that any such true believers would willingly stay inside groups of these types.

Roman Catholicism is often viewed as a legitimate part of historical Christianity, but this is far from the case. Indeed, Roman Catholicism is another grouping that belongs within the category of being a cult. Certainly that is my opinion and this is the historical opinion of Evangelical Christianity and Protestantism.

Sadly, it has been my growing experience that many who profess Christianity, see Roman Catholicism as just another stream of true Christianity. Certainly these people cannot agree with some of the teachings of Rome, but none-the-less they view Roman Catholicism as just another legitimate stream of Christianity that is a bit divergent from Protestantism. These people think that unity with Rome wouldn’t be such a bad thing, even if we can’t agree on anything.

It is disappointing to note that a number of people within the Reformed camp also agree with such sentiment regarding Roman Catholicism. I am stunned by how quickly these people forget the past and the truths that the Reformation sought to establish once again as being the true backbone of Christianity.

Leaving the Roman Catholics aside, let me briefly comment on Protestantism in Australia. There is a good section within this grouping (which would include Anglicans, Presbyterians, Baptists, Uniting, etc) that would be equally happy within the Roman Catholic communion and it would be better for Protestantism if they were. These people are merely nominal at best and quite openly hold to Papist ideals and teachings. Let Rome have them if they will not cast off their heretical ideas and take hold of Christ and His teachings.

The majority of Protestants these days are not of the breed of Protestants that brought Protestantism into being. They no longer hold to the Scriptures as being the standard of belief, faith and practice. These days Protestantism is ruled by the leading of sentimentalism, mediocrity and pragmatism, being concerned more for religion and obtaining numbers within the building, rather than Biblical Christianity and salvation of the lost through the proclamation of the Biblical Gospel. This then is the Christianity of today within Australia.

I know of people raised in Christian homes and churches that are openly embracing heresy, believing that they have been misled from their youth. Such expressions of Christianity are being broadcast over social networks, as ever increasing numbers fall victim to every wind of doctrine as a result of poor or even no teaching within churches, having become the victims of chatter from the pulpits that comes nowhere close to being the preaching that the Bible expects to be delivered (if indeed preaching and teaching are regarded as being necessary at all within the church concerned).

In the Reformed churches there are varying issues that are robbing the movement of its potential power to transform the country through the truth that it possesses. There are problems with Lording it over the church and being caught up on matters of lesser importance (if they are indeed important at all), of attempting to match it with the general malaise of religion (but in a more covert manner while trying to maintain the reformed name) and simply imbibing the mediocrity of religion surrounding the churches.

We are in a bad way in Australia and we need God given revival (as opposed to what goes by the name revival in cranked up programs and services throughout the country). We need God given preachers who will preach God given truth with God given power and God given life. We need to go back to Bible basics before religion is nothing more than a man-made shell (if we haven’t already reached that point) and true Christianity is extinct in this country.

ALL AUSSIE ADVENTURES: With Russell Coight

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Most people who know me know that I love the Australian bush and wilderness, and whenever I can I like to be able to get away from it all and head bush for a while.

Here in Australia there have been a number of television shows over the years that have explored the Australian outback and bush. A couple of years ago a different style of exploring Australia television shows hit the small screen – it was called ‘All Aussie Adventures,’ with Glenn Robbins playing the host Russell Coight. It was a send up of these types of shows and it always gave viewers a bit of a laugh with its light comedy.

Anyhow, I found some of the show on the Internet and thought I’d post some here for those interested in Australia from a somewhat different angle. A word of warning though – don’t take too much that Russell Coight says seriously (you’ll be led astray).

Visit the television shows web site at:

http://www.bigcoight.com/

 

Below: These clips show most of the first episode of All Aussie Adventures.