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Solar flares & solar wind can push satellites out of position & ideal orbits - corrections have to be made using onboard thrusters after a solar storm. Being out of position I imagine may have an effect on the measurements.
Thank you for this! P.S. I have to say, I am really missing and will miss, not to have Live From Iceland's channel for all the information and camera views! ☹️
On the same page, further down, there is a four hour data plot of the Svartsengi GPS station, and there the data points more or less alternate between two levels, like an ebb and flow movement. I have a totally amateurish (if not nonsensical) idea: the weight of the lava outflow of the last year has become so heavy, that the magma is experiencing a pressure that squeezes it into another direction, like toothpaste. It can no longer lift the ground as it had done before. Maybe it even travels to a different place before it breaches the surface. The issue is: I have no idea where.
As long as the eruption is still planned for December 24 so we can all have nice "foreplace videos" for Chrsitmas, I am OK 🙂 There are 2 systems t counter ionosphere problems with GPS: WASS and DGPS. For DGPS, you have a local station with known location, and if weather conditions cause GPS signals to wander around, the DGPS unit sees this and will broadcast corrections to GPS units in the region. However, I am not sure if this works for altitude and it assumes that the ground doesn't move (since DGPS uses its known fixed position as reference against a position calculated from GPS signals). WAAS (Wide Area Augmentation System) is similar except the corrections are sent to a satellite and GPS receivers in this larger area can receive those corrections. This does not have actual weather corrections, only ionosphere/space weather ones since it applies to larger area.
I wondered if the receiving chamber had increased in size slightly, and therefore, pressure had dropped, and or gave the impression of a reduction in flow. I guess we're closer to knowing the answer (a week or two away from the previous pattern of eruptions). I guess also that the fault is conscious enough to want to delay the next eruption until Santa Claus needs the additional light when travelling south from Lapland.
There is no evidence of slowed magma influx, Shawn. Current data clearly shows that it is still producing 4,5c3/s for inflow rate, as there is no inclination for decreasing inflow. The reason why you see variations in inflows/GPS is due to shallow sill storage expanding laterally in north to west plus injecting small volumes of fresh magma into the dike, it explains why uplift seems to be "slow" as data supports it. For example, latest INSAR imaging clearly shows that there is new inflation starting to expand to dike itself followed by GPS still showing continuous uplift at BL and now dike. And now, we're starting to see more clusters of earthquakes at the main feeder at entrance of the dike from Blue Lagoon between two big hills which it tells us that magma is starting to come in to the dike in small volumes more frequently as shallow sill storage is now full after today. We'll see more like this for while until main eruption.
Please LIKE and SUBSCRIBE. I also appreciate your continual support of these geology education videos. To do so, click on the "Thanks" button just above (right of Download button) or by going here: www.paypal.com/donate/?hosted_button_id=EWUSLG3GBS5W8 Or: www.buymeacoffee.com/shawnwillsey
Didn't we see similar trends in the weeks before the previous eruptions?
I'm so impressed that you keep us updated, even when there are no spectacular images to inspire clicks.
These updates are wonderful. Thanks for keeping us informed.
Thanks, Shawn! Even when there isn’t big news, the updates are still fascinating. Take care!
Appreciate the update and Dr. Poland's explanation about the GPS.
The dynamic duo... Shawn and Mike
Thank you Shawn always look forward to your updates you give great information 😊
Thanks for all the hard work on these videos!
Thanks for this update Shawn: always appreciated.
Thanks for the update, Shawn.
Thank you Professor
Great update
Solar flares & solar wind can push satellites out of position & ideal orbits - corrections have to be made using onboard thrusters after a solar storm. Being out of position I imagine may have an effect on the measurements.
Hello everyone from central New York
Thanks Shawn, interesting 🤔
Thank you for this!
P.S. I have to say, I am really missing and will miss, not to have Live From Iceland's channel for all the information and camera views! ☹️
They had a lot of very bad weather in Iceland within the last few weeks.
Thanks for the update… hard ti know what’s going on
The calm before the storm ? 🌋
Thank you 👍 can’t wait to find out why it has slowed like that.
Di…Cumbria.
Thank you. I miss the one webpage with the earthquake monitor so this update fills the gap.
Thank you
On the same page, further down, there is a four hour data plot of the Svartsengi GPS station, and there the data points more or less alternate between two levels, like an ebb and flow movement.
I have a totally amateurish (if not nonsensical) idea: the weight of the lava outflow of the last year has become so heavy, that the magma is experiencing a pressure that squeezes it into another direction, like toothpaste. It can no longer lift the ground as it had done before. Maybe it even travels to a different place before it breaches the surface. The issue is: I have no idea where.
Did someone make a prediction for an eruption Nov.14. ? I thought you said that🤔 Well,It would be close
Thanks!
If the magma moved away from Iceland, where would it go?
If you meant hot spot plume? It would shift in south-east as the main plume is directly under Barbarbunga.
As long as the eruption is still planned for December 24 so we can all have nice "foreplace videos" for Chrsitmas, I am OK 🙂
There are 2 systems t counter ionosphere problems with GPS: WASS and DGPS. For DGPS, you have a local station with known location, and if weather conditions cause GPS signals to wander around, the DGPS unit sees this and will broadcast corrections to GPS units in the region. However, I am not sure if this works for altitude and it assumes that the ground doesn't move (since DGPS uses its known fixed position as reference against a position calculated from GPS signals).
WAAS (Wide Area Augmentation System) is similar except the corrections are sent to a satellite and GPS receivers in this larger area can receive those corrections. This does not have actual weather corrections, only ionosphere/space weather ones since it applies to larger area.
It seems the far corners are still rising at allmost undisturbed pace
I wondered if the receiving chamber had increased in size slightly, and therefore, pressure had dropped, and or gave the impression of a reduction in flow. I guess we're closer to knowing the answer (a week or two away from the previous pattern of eruptions). I guess also that the fault is conscious enough to want to delay the next eruption until Santa Claus needs the additional light when travelling south from Lapland.
True story :)
Sounds like magma is moving through new areas. We saw this before and the eruption shifted.
There is no evidence of slowed magma influx, Shawn.
Current data clearly shows that it is still producing 4,5c3/s for inflow rate, as there is no inclination for decreasing inflow. The reason why you see variations in inflows/GPS is due to shallow sill storage expanding laterally in north to west plus injecting small volumes of fresh magma into the dike, it explains why uplift seems to be "slow" as data supports it. For example, latest INSAR imaging clearly shows that there is new inflation starting to expand to dike itself followed by GPS still showing continuous uplift at BL and now dike.
And now, we're starting to see more clusters of earthquakes at the main feeder at entrance of the dike from Blue Lagoon between two big hills which it tells us that magma is starting to come in to the dike in small volumes more frequently as shallow sill storage is now full after today. We'll see more like this for while until main eruption.
It found a new chamber....it will spike again.
T ku