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#groundwater

4 innlegg4 deltakereett innlegg i dag
Offentlig
💧🌏 Greg Cocks

Why Geological Maps Are The Best Investment You’ve Never Heard Of - Investments In Geological Mapping Paid Off Big Time For Americans.
--
zmescience.com/science/geology <-- shared opinion piece
--
profession.americangeosciences <-- shared technical cost-benefit analysis
--
geosociety.org/GSA/gsa/positio <-- shared 2003 GSA appraisal
--
[I am, of course, biased in this regard, but I also like well-presented metrics – and use cases being met are my favourite!]
#geology #value #cost #mapping #cartography #cartographic #USA #costbenefit #geologicmapping #metrics #usecase #fedscience #appliedscience #engineeringgeology #spatial #GIS #construction #resources #naturalresources #engineering #risk #hazard #naturaldisasters #payoff #investment #massmovement #groundwater #waterresources #water #hydrology #rareearth #minerals #mining #oilandgas #exploration #underground #money #economics #publicgood #publicvalue #investment

Offentlig
DoomsdaysCW

#Fukushima Now – Current State of Post-Accident Operations at Fukushima Daiichi Nuclear Power Station (August 2024 to January 2025)

by Citizens' Nuclear Information Center · Published April 2, 2025 · Updated April 2, 2025

By Matsukubo Hajime

Excerpt: State of #ContaminatedWater

"Contaminated water countermeasures at #FukushimaDaiichi #NuclearPower Station (#FDNPS) can be broadly divided into three areas: 1) Reduction of #groundwater flowing into buildings, 2) Reduction of #ContaminatedWater flowing into the sea, and 3) Reduction of the toxicity of contaminated water.

"Countermeasures implemented to reduce water inflow into the buildings are, from higher elevations downward, (A) Pumping up groundwater at the groundwater bypass and releasing it into the sea (953,611m3 up to February 10, 2025), B) Installation of a frozen earth barrier (on-land water barrier, total length roughly 1,500m) surrounding FDNPS Units 1-4, C) Pumping up water at the subdrains and releasing it into the sea (1,801,404m3 up to February 9), and D) Paving of the site with asphalt to suppress permeation of rainwater into the soil. Measures to prevent the discharge of contaminated water into the ocean include A) Groundwater leakage prevention by a steel water barrier on the sea-side and B) Pumping up of groundwater dammed up behind the sea-side water barrier from the well points and groundwater drains. Due to these measures, the volume of contaminated water discharged, 540m3/day in May 2014, fell to 80m3/day in FY2023, and was below 100m3/day in FY2024.

"In the reduction of the toxicity of contaminated water, cesium and strontium are removed, and after the removal of impurities using a reverse osmosis (RO) membrane, the multi-radionuclide removal equipment (ALPS – Advanced Liquid Processing System) then removes 62 radionuclides [NOT COMPLETELY!!!]. The water is then stored in tanks (containing 1,297,190m3 as of January 30, 2025. However, due to past equipment #malfunctions and operational policies, around 64% of the stored water exceeds the notification concentration).

"Oceanic release of the ALPS-treated contaminated water began on August 24, 2023, a total of 78,285m3 being released in ten batches by January 2025. Table 2 shows the amounts released in each release and the total amount of tritium released. The concentration is gradually rising. One further release is scheduled during FY2024. In addition, roughly 15,720m3 of water remain in buildings, and a further 8,946m3 of strontium-treated water, etc., 5,644m3 of water treated by RO, and 9,463m3 of concentrated wastewater, etc. also exist onsite."

Read more:
cnic.jp/english/?p=8272
#FukushimaIsntOver #WaterIsLife #PacificOcean #TEPCOLies #FukushimaNuclear #RethinkNotRestart #RadioactiveContamination #HormesisIsBullShit #Bioaccumulation

cnic.jpFukushima Now (28) – Current State of Post-Accident Operations at Fukushima Daiichi Nuclear Power Station (August 2024 to January 2025) – Citizens' Nuclear Information Center
Offentlig
Dr Micha Campbell

One month left to provide feedback on our preprint "Rainfall recharge thresholds decrease after an intense fire over a near-surface cave at Wombeyan, Australia."

We are keen for some constructive feedback to improve the paper :)

egusphere.copernicus.org/prepr

#hydrology #KarstHydrology #Groundwater #preprint

@Andbaker

egusphere.copernicus.orgRainfall recharge thresholds decrease after an intense fire over a near-surface cave at Wombeyan, AustraliaAbstract. Quantifying the amount of rainfall needed to generate groundwater recharge is important for the sustainable management of groundwater resources. Here, we quantify rainfall recharge thresholds using drip loggers situated in a near-surface cave: Wildman’s cave at Wombeyan, southeast Australia. In just over two years of monitoring, 42 potential recharge events were identified in the cave, approximately 4 m below land surface which comprises a 30° slope with 37 % bare rock. Recharge events occurred within 48 hours of rainfall. Using daily precipitation data, the median 48 h rainfall needed to generate recharge was 19.8 mm, without clear seasonal variability. An intense experimental fire experiment was conducted 18 months into the monitoring period: the median 48 h rainfall needed to generate recharge was 22.1 mm before the fire (n=22) and 16.4 mm after the fire (n=20), with the decrease in rainfall recharge most noticeable starting three months after the fire.. Rainfall recharge thresholds and number of potential recharge events at Wildman’s Cave are consistent with those published from other caves in water-limited Australia. At Wildman’s Cave, we infer that soil water storage, combined with the generation of overland flow over bare limestone surfaces is the pathway for water movement to the subsurface via fractures and that these determine the rainfall recharge threshold. Immediately after the fire, surface ash deposits initially retard overland flow, and after ash removal from the land surface, soil loss and damage decrease the available soil water storage capacity, leading to more efficient infiltration and a decreased rainfall recharge threshold.
Offentlig
Dr Micha Campbell

There's only one month left for open comments on our current preprint, which looks at rainfall recharge thresholds before and after a fire.

We are very interested to get some community input! If you are interested in #groundwater #waterResources #karstHydrology #hydrology, please check it out.

egusphere.copernicus.org/prepr

@Andbaker

egusphere.copernicus.orgRainfall recharge thresholds decrease after an intense fire over a near-surface cave at Wombeyan, AustraliaAbstract. Quantifying the amount of rainfall needed to generate groundwater recharge is important for the sustainable management of groundwater resources. Here, we quantify rainfall recharge thresholds using drip loggers situated in a near-surface cave: Wildman’s cave at Wombeyan, southeast Australia. In just over two years of monitoring, 42 potential recharge events were identified in the cave, approximately 4 m below land surface which comprises a 30° slope with 37 % bare rock. Recharge events occurred within 48 hours of rainfall. Using daily precipitation data, the median 48 h rainfall needed to generate recharge was 19.8 mm, without clear seasonal variability. An intense experimental fire experiment was conducted 18 months into the monitoring period: the median 48 h rainfall needed to generate recharge was 22.1 mm before the fire (n=22) and 16.4 mm after the fire (n=20), with the decrease in rainfall recharge most noticeable starting three months after the fire.. Rainfall recharge thresholds and number of potential recharge events at Wildman’s Cave are consistent with those published from other caves in water-limited Australia. At Wildman’s Cave, we infer that soil water storage, combined with the generation of overland flow over bare limestone surfaces is the pathway for water movement to the subsurface via fractures and that these determine the rainfall recharge threshold. Immediately after the fire, surface ash deposits initially retard overland flow, and after ash removal from the land surface, soil loss and damage decrease the available soil water storage capacity, leading to more efficient infiltration and a decreased rainfall recharge threshold.
Offentlig
DoomsdaysCW

Stories from #TheAmazon, #Kenya and #Zimbabwe

#WorldWaterDay: 3 stories of #resistance and #restoration from around the globe

Kristine Sabillo, 21 Mar 2025

"More than 2 billion people around the world live without access to safe drinkable water, as rivers, #groundwater, lakes and #glaciers face continued threats of #pollution and overexploitation due to #urbanization, #EnvironmentalDestruction, and #ClimateChange .

"This World Water Day, #Mongabay looks back at some of its coverage from 2024 on how local communities are trying to protect the world’s dwindling water resources."

news.mongabay.com/short-articl
#WaterSecurity #WaterIsLife #RiversAreLife #OceansAreLife #Wetlands #Marshes #Rivers

Mongabay Environmental News · World Water Day: 3 stories of resistance and restoration from around the globeMore than 2 billion people around the world live without access to safe drinkable water, as rivers, groundwater, lakes and glaciers face continued threats of pollution and overexploitation due to urbanization, environmental destruction, and climate change. This World Water Day, Mongabay looks back at some of its coverage from 2024 on how local communities are […]
Offentlig
Dr Micha Campbell

🚨 New preprint 🚨

Hydrology and cave (and cave hydrology!) enthusiasts may enjoy this preprint just posted today for community review in the #EGU journal #HESS. Led by former #UNSW student, Christina Song, with @Andbaker and myself, we looked at recharge thresholds (amount of precipitation needed for recharge to occur in a cave), and how they changed after a fire.

egusphere.copernicus.org/prepr

The preprint is open now for community discussion, and will be accepting comments until 23 April.

egusphere.copernicus.orgRainfall recharge thresholds decrease after an intense fire over a near-surface cave at Wombeyan, AustraliaAbstract. Quantifying the amount of rainfall needed to generate groundwater recharge is important for the sustainable management of groundwater resources. Here, we quantify rainfall recharge thresholds using drip loggers situated in a near-surface cave: Wildman’s cave at Wombeyan, southeast Australia. In just over two years of monitoring, 42 potential recharge events were identified in the cave, approximately 4 m below land surface which comprises a 30° slope with 37 % bare rock. Recharge events occurred within 48 hours of rainfall. Using daily precipitation data, the median 48 h rainfall needed to generate recharge was 19.8 mm, without clear seasonal variability. An intense experimental fire experiment was conducted 18 months into the monitoring period: the median 48 h rainfall needed to generate recharge was 22.1 mm before the fire (n=22) and 16.4 mm after the fire (n=20), with the decrease in rainfall recharge most noticeable starting three months after the fire.. Rainfall recharge thresholds and number of potential recharge events at Wildman’s Cave are consistent with those published from other caves in water-limited Australia. At Wildman’s Cave, we infer that soil water storage, combined with the generation of overland flow over bare limestone surfaces is the pathway for water movement to the subsurface via fractures and that these determine the rainfall recharge threshold. Immediately after the fire, surface ash deposits initially retard overland flow, and after ash removal from the land surface, soil loss and damage decrease the available soil water storage capacity, leading to more efficient infiltration and a decreased rainfall recharge threshold.
#Hydrology#groundwater#preprint
Offentlig *
Andy Baker

Linking climate to groundwater recharge – the view from underground

I've been invited to present to the International Association of Hydrogeologists, Australian New South Wales section, on Tuesday 11th March. If the title above sounds interesting, details are below, non members are welcome and the event is hybrid. You can read more at:

andy-baker.org/2025/02/25/link

Andy Baker · Linking climate to groundwater recharge – the view from underground
Mer fra Andy Baker
#climate#groundwater#academia
Offentlig
Benjamin Carr, Ph.D. 👨🏻‍💻🧬

#Solar-powered #desalination
A new system could make #brackish #groundwater drinkable at low cost in communities where #seawater and grid power are limited. The system is a variation of a previous design based on #electrodialysis, which uses an electric field to draw out salt ions as #water is pumped through a stack of ion-exchange membranes.
technologyreview.com/2024/12/2

MIT Technology Review · Solar-powered desalinationAv Jennifer Chu
Offentlig *
Andy Baker

Groundwater recharge:  abstract submissions are open for IAH 2025 in Melbourne

Calling all researchers and practitioners interested in how groundwater is replenished! There is now a groundwater recharge theme at the IAH 2025 Congress in Melbourne in September....

andy-baker.org/2025/02/06/grou

Andy Baker · Groundwater recharge:  abstract submissions are open for IAH 2025 in Melbourne
Mer fra Andy Baker
#academia#groundwater#science
Offentlig *
Paul Chambers🚧

WATCH: Deep fractures under radioactive nuclear #Ohio landfill, upstream of #Cincinnati.

This detailed local news investigation is alarming. It's too expensive to stop response from the DOE is even more alarming.

This landfill was greenlit and the facts hidden by Trump #1 DOE

This is not far from me. Now, of course, we have the Trump admin in. I posted about the color of our water sometimes from these sites that are being cleaned up. Also, not far from me. See tub water in next reply.

#environment #Groundwater

myfox28columbus.com/news/local

Offentlig
O=C=O

Groundwater in the Arctic is delivering more carbon into the ocean than was previously known

A relatively small amount of #groundwater trickling through #Alaska's #tundra is releasing huge quantities of #carbon into the #ocean, where it can contribute to #ClimateChange, according to new research out of The University of Texas at Austin.
As the tundra continues to thaw and the flow of submarine groundwater ratchets up, Demir said that the outflow of carbon from shore to sea could effectively make ocean surface waters a carbon source to the #atmosphere. The #CO2 released via groundwater could also contribute to ocean #acidification.
"The #Arctic coast is changing in front of our eyes," said Bayani Cardenas, a co-author of this study and professor at the Jackson School's Department of Earth and Planetary Sciences. "As #permafrost thaws, it turns into coastal and submarine #aquifers. Even without this thawing, our studies are among the first to directly show the existence of such aquifers."

phys.org/news/2025-01-groundwa

#ClimateScience
#ClimateCrisis
#Cryosphere

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