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              A bus at a bus station.

              New round of regional transport strike in the North

              The outside of a building by night.

              Pro-Russian hackers claim cyberattack on UMCG

              A woman.

              Groninger photographer Courtney Bonneau launches new exhibition in Lebanon

              The cold of the North is compensated by the warmth of its people – Ocean Grazer engineer

              The cold of the North is compensated by the warmth of its people – Ocean Grazer engineer

              Philips Drachten

              Philips to fire 6,000 staff to cut costs

              First flight from Eelde to Munich

              Eelde Airport secures two new summer routes

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              Lobbying for the North: Building a Hydrogen Valley

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                The anti Zwarte Piet protest in Emmen

                Emmen: Four people still detained after anti Zwarte Piet protest

                The inside of Forum Groningen

                “Let’s Gro” opens a discussion on the future of Groningen

                What about food in student city Groningen?

                Where to get knockout fries in the northern provinces

                Ukraine Food opens in Groningen

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                Buses will no longer travel through the Grote Markt in Groningen

                Buses will no longer travel through the Grote Markt in Groningen

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                Noorderzon festival returning to Groningen in August

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                Plans for extensive Kardinge residential expansion revealed

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                  Eurosonic Noorderslag

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                  It’s beginning to look a lot like Christmas

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                  A devastating defeat; an unexpected victory

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                  Sinterklaas is Here!

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                  A moment from NFF 2021

                  Noordelijk Film Festival 2022 has started

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                    Watch: A workplace that sells itself – CTO on working at Ocean Grazer

                    It’s beginning to look a lot like Christmas

                    It’s beginning to look a lot like Christmas

                    People protesting on a street in Groningen.

                    Former Sugar Homes residents protest for return of withheld deposit

                    I’m not Black; I’m African

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                    A letter from the Editor – Internationals from 120 countries: Welcome to Groningen, Leeuwarden, Assen and Emmen!

                    MPs call for cap on foreign student numbers in order to ensure ‘accessibility’

                    Watch: I’m 100% positive about my Groningen internship – Hanze international student

                    Watch: I’m 100% positive about my Groningen internship – Hanze international student

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                      Watch: A workplace that sells itself – CTO on working at Ocean Grazer

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                      History of earthquakes and natural gas in Groningen (update)

                      Traci White by Traci White
                      October 19, 2022
                      in News
                      1
                      earthquake_damage

                      136 claims for structural damage have been filed since the two earthquakes in the Uithuizen area

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                      On Saturday, 8 October 2022, a 3.1 magnitude earthquake struck Wirdum, a village 26 kilometers northeast of the city of Groningen. Two weeks on, there have been more than 1,100 damage claims filed by impacted residents. It’s one of the strongest of thousands of tremors that have hit the province in the past 25 years as a result of natural gas extraction operations.

                      This story was originally published in January 2018 and has been updated in October 2022.

                      Production has been severely reduced in recent years in an effort to cause fewer quakes, but the October quake was the strongest of 2022 thus far.

                      The introduction of a story about the long and ongoing history of earthquakes in Groningen is sadly predictable, and timeless: a quake, its magnitude, a location, a time, a number of damage reports. Yet the seemingly low magnitude of the quakes are deceptive, and not reflective of the psychological, physical, emotional and financial toll the persistent tremors take on the people living in the region.

                      The location of most of the gas is relatively shallow, and with little forestation and only small clusters of developed areas, there is not much on the surface to absorb the impact of the earthquakes in the province. When they do happen, their impact can be felt many kilometers away from the epicenter. The Wirdum quake over the weekend was located around 3 kilometers underground (by comparison, most quakes caused by seismic activity originate around 10 kilometers below the earth’s surface)

                      The Slochteren field

                      When the Slochteren gas field was discovered in the province of Groningen in 1959, it was not immediately clear just how large the natural gas reserve was. Three kilometers underground lie a 2.8 trillion cubic meter gas field contained by the sandstone above: the reservoir is naturally sealed by the geological development of a layer of salt.

                      Gas extraction operations occurred in Groningen for 20 years without any induced earthquakes, but according to figures from the Dutch meteorological organisation KNMI, there were 1,470 earthquakes in the Netherlands between 1986 and 2018: on Christmas Day 1986, a 2.8 quake struck in Assen.

                       

                      gas_pipelines

                      The quakes were relatively rare at first. Between 1986 and 1990, there were only three recorded quakes. But starting in the ‘90s, they were detected more frequently: there were 4 in 1991, 6 in 1992, and 16 in 1993.

                      Twenty years later, the quakes had become so frequent that there was one earthquake every three days on average: there were 133 confirmed earthquakes in 2013. Of those, 121 occurred in the province of Groningen. 2013 also marked the peak of gas extraction operations – 53.9 billion cubic meters – since the quakes became a common occurrence.

                      Huizinge

                      Nine quakes have been measured above 3.0 on the Richter scale since 2001. The biggest measured quake so far – 3.6 – occurred in 2012 in Huizinge. Starting in 2013, the Dutch government called for the gas production operations to pump the brakes to prevent more earthquakes.

                      The government capped the operations at the Groningen gas field to 24 billion cubic meters per year through 2021. But despite only 19.3 billion cubic meters being extracted in 2017, there were actually even more induced earthquakes registered than in 2013.

                      That does not necessarily mean there were more of these smaller quakes: NAM’s detection and measurement network was upgraded in 2014, which made it easier to pick up on activity below 1.5 magnitude. In 2020, there were 90 quakes, 69 of which were extraction-induced tremors in Groningen.

                      In the so-called “gas year” 2021-2022, the cap was far lower: 4.5 billion cubic meters. As of October 2022, the operations are at their lowest in decades, and the goal is to keep it that way, with a limit of 2.8 billion cubic meters being extracted (which is considered the minimum to keep the gas accessible) – despite pressure from a smattering of voices in the political realm calling to crank up production again in the face of rising energy prices due to the war in Ukraine.

                       

                      Source: Probabilistic Seismic Hazard Analysis for Induced Earthquakes in Groningen, Update June 2017

                      Friesland and Drenthe

                      Groningen is the location of the most earthquakes by far, but it is not the only Dutch province where gas extraction occurs. Friesland and Drenthe also have sites where natural gas is extracted or refined, including in the vicinity of the Wadden Sea (with recently announced plans to scale up extraction north of Schiermoonikoog).

                      But roughly half of all the natural gas used in this country comes from the Slochteren gas field in the province of Groningen. Natural gas is a highly common energy source across the Netherlands: 40 billion cubic meters are used domestically in the Netherlands annually on average. Natural gas is more or less just methane – only ten percent of natural gas consists of other gases. Methane can trap significant amounts of heat in its unburned form, and a considerable quantity can escape during extraction and transportation.

                      Fifty years of extraction have resulted in roughly 1,700 billion cubic meters of gas being pumped out of the ground, which is about two-thirds of the total estimated amount in the reservoir. Extraction operations in the gas field in Groningen are run by the Dutch Petroleum Company (Nederlandse Aardolie Maatschappij BV), better known as NAM. NAM is co-owned by Royal Dutch Shell and ExxonMobil. Roughly 1,800 employees work for NAM, but most of the facilities across Groningen are largely unmanned: the majority of those jobs are at NAM’s headquarters in Assen, in the northern province of Drenthe.

                      Unsafe schools

                      Over the past 50 years, revenue from the extraction, refinement, storage, transportation and sales of natural gas in the Netherlands is estimated to be above 250 billion euros, which has been primarily reinvested in infrastructure, including tunnels, train tracks, upgrades to Dutch highways, water management, train stations and urban development initiatives.

                      NAM has set aside 1.2 billion euros to compensate the thousands of people living in the earthquake-prone areas of Groningen, but the historic brick farmhouses dotting the previously peaceful landscape were not built to withstand sustained seismic activity.

                      Many structures have been so severely damaged that they have been condemned or torn down.In total, 3,300 buildings have been demolished in the province because of earthquake damage since 2012. Children from two elementary schools in the town of Loppersum were forced to attend classes elsewhere because their schools were deemed unsafe: one of the schools, Prinses Beatrix, was torn down in 2017.

                      In 2021, ongoing research from the University of Groningen estimated that up to 100,000 people in the province had suffered damage from the quakes. While the persistent quakes have taken a toll on the residents of the province mentally, financially and emotionally, as far as has been made publicly known, no injuries or deaths have directly resulted from the manmade quakes.

                      Since June of 2022, a series of public hearings have been held in The Hague as part of a national inquiry into the gas extraction operations and their impact on the residents. According to reporting by Dutch News, the inquiry was set up to determine why the gas extraction operations have left residents of the region in fearful uncertainty for decades, how much damage has been caused, the full financial toll, and ultimately deciding which parties in the extraction operations are responsible for what.

                       

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                      A post shared by Word on the Wire (@wordonthewire)

                      But the locals are not taking it lying down: a handful of fierce activist groups (Groninger Bodem Beweging, Groningers in Opstand, Schokkend Groningen, among others) have cropped up over the past decade, organizing torch-lit marches, tractor-filled demonstrations, and protesting at gas extraction sites throughout the province.

                      Several marches were held in 2018, followed almost exactly four years later to the date in 2022. It remains to be seen if similar actions will crop up in the aftermath of the Wirdum quake, but as long as the tremors continue, speaking out on behalf of the victims of the quakes will remain necessary.

                       

                      Tags: earthquakesFeaturedGroningenNAMShellSlochteren
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