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David Dempsey1

Senior lecturer, University of Canterbury
My research group tackles some big challenges that arise when managing extreme groundwater systems in a safe and sustainable way.

Steam-driven volcanic eruptions - we use machine learning techniques to identify seismic signals that suggest an imminent eruption from shallow hydrothermal systems. Using this, we have developed a real-time warning system for Whakaari.

Human-triggered earthquakes - we model how fluid injection and extraction in hydrocarbon projects changes stress on faults. By matching the rate of earthquakes in the past, we can predict the future earthquake rate for different operation styles.

Geothermal reservoir imaging - we study the interaction of solar electromagnetic signals with the Earth to understand where, how large and how powerful our geothermal systems are.

Carbon sequestration - we use models to demonstrate safe and efficient ways to pump large amounts of CO2 underground so that it doesn't contribute to climate change.

NZ’s gas shortage was not caused by the offshore exploration ban – but it was still a flawed policy

Dec 02, 2024 23:37 pm UTC| Insights & Views Economy

Historically, gas in New Zealand traded below NZ$10 per gigajoule. When prices hit $50 per gigajoule in August this year, anyone with gas to sell could have made a lot of money. But there clearly wasnt much gas around....

Green hydrogen could decarbonise entire industries in NZ – but there’s a long way to go

Nov 25, 2024 23:41 pm UTC| Insights & Views Business

Hydrogen has been called the Swiss army knife of decarbonisation because it can do many things. But not all of them make sense. Today, the world uses about 100 megatonnes of hydrogen per year (MT/y), but this is...

Economy

Oil Prices Drop as Middle East Supply Recovery Eases Market Concerns

Global oil prices continued to decline on Thursday, reaching levels close to those seen before tensions escalated between Iran and its regional rivals. The sharp drop in crude prices reflects growing confidence that oil...

White House Seeks $87.6 Billion Emergency Funding for Iran War, Farmers, and Ebola Response

The White House has formally asked Congress to approve an $87.6 billion supplemental spending package aimed at covering expenses tied to the ongoing Iran war, while also providing funding for American farmers and...

Japan Signals Preference for Low Interest Rates as BOJ Policy Debate Intensifies

Japans government is preparing to push for a monetary policy that supports stronger private demand, highlighting its preference for keeping borrowing costs low even as the Bank of Japan (BOJ) continues normalizing interest...

Gold Drops Below $4,000 as Strong US Dollar and Fed Rate Hike Expectations Pressure Bullion

Gold prices continued their downward trend during Asian trading on Thursday, falling to their lowest level in more than seven months as a stronger U.S. dollar and growing expectations of additional Federal Reserve interest...

South Korea’s KOSPI Jumps Over 5% as Samsung, SK Hynix Rally on Micron Earnings Boost

South Koreas benchmark KOSPI index soared more than 5% at Thursdays market open, prompting the Korea Exchange (KRX) to temporarily halt program trading after a sharp rally fueled by leading semiconductor stocks. The...

Politics

Iran Strait of Hormuz Tensions Rise After Ship Attack Delays IMO Escort Mission

A reported attack on a cargo ship near the Strait of Hormuz has prompted the United Nations International Maritime Organization (IMO) to temporarily suspend its ship escort mission, raising fresh concerns over the fragile...

US Supreme Court Strikes Down Hawaii Gun Carry Law on Private Property

The U.S. Supreme Court has ruled that a Hawaii law restricting licensed handgun owners from carrying firearms on private property open to the public without the owners explicit permission violates the Second Amendment. The...

Israel Heritage Bill Sparks Annexation Concerns in West Bank

Israels proposed Heritage Authority in Judea and Samaria bill is drawing widespread criticism from Palestinians, Israeli rights organizations, and academic experts, who argue that it could accelerate Israeli settlement...

US Reaffirms Taiwan Arms Sales Policy Despite Trump’s Comments on China

The United States has reaffirmed that its planned arms sale to Taiwan is not dependent on negotiations with China, despite previous remarks from President Donald Trump that suggested otherwise. The clarification came from...

US Mobilizes Aid After Powerful Earthquakes Devastate Venezuela

Powerful earthquakes that struck Venezuela on Wednesday have prompted an immediate response from the United States, which is coordinating with Venezuelan authorities and preparing emergency assistance for the disaster-hit...

Science

Blue Origin New Glenn Explosion Could Delay Launch Operations Until 2028

Blue Origin is facing a significant setback after a dramatic explosion involving its New Glenn rocket severely damaged a launch pad at Cape Canaveral, Florida. According to NASA Administrator Jared Isaacman, repairs to the...

Blue Origin New Glenn Rocket Explodes During Launch Pad Test, Delaying Space Ambitions

Blue Origin suffered a major setback after its uncrewed New Glenn rocket exploded during a launch pad test in Florida on Thursday, raising new challenges for Jeff Bezos space company as it competes with Elon Musks SpaceX...

SpaceX Delays Starship V3 Launch Ahead of Potential Record IPO

SpaceX on Thursday postponed the highly anticipated launch of its 12th Starship rocket test from Texas after technical issues interrupted the final countdown. The company now plans to attempt the Starship V3 launch again...

Trump Administration Releases New UFO Files and Apollo Mission Records

The U.S. Defense Department has released dozens of previously classified UFO-related files following an order from President Donald Trump, sparking renewed debate over unidentified anomalous phenomena (UAP) and government...

China vs. NASA: The New Moon Race and What's at Stake by 2030

The space race is back and this time, its a direct competition between the United States and China for dominance on the lunar surface. NASAs Artemis II mission recently made history when four astronauts flew farther into...

Technology

Kioxia Targets U.S. Listing as AI Chip Boom Accelerates

Japan-based Kioxia Holdings Corp. (TYO:285A) is preparing to launch U.S. depositary shares in the spring of 2027, a strategic move aimed at expanding its global investor base and taking advantage of growing enthusiasm for...

Doncasters Raises $919 Million in NYSE IPO as Aerospace Growth Accelerates

Doncasters has successfully raised $919.3 million through its U.S. initial public offering (IPO), marking a significant milestone in the aerospace components manufacturers long-term transformation. The historic British...

SK Hynix Targets $29.4 Billion Nasdaq Listing to Expand AI Chip Business

SK Hynix has announced plans to raise as much as $29.4 billion through a Nasdaq listing in the United States, positioning the deal as one of the largest global stock offerings in history. The South Korean memory chip...

Alibaba Shares Fall After Anthropic Alleges Massive AI Model Distillation Campaign

Alibaba Groups Hong Kong-listed shares dropped sharply on Thursday after reports revealed that U.S.-based artificial intelligence company Anthropic accused the Chinese tech giant of conducting a large-scale campaign to...

Samsung and SK Hynix Shares Jump After Micron Earnings Boost AI Chip Optimism

Samsung Electronics and SK Hynix posted strong gains on Thursday after Micron Technology delivered record quarterly earnings and issued a stronger-than-expected revenue forecast, reinforcing confidence in the growing...