‘Nick From Home’ Livestream #44 - Milankovitch Cycles
HTML-код
- Опубликовано: 30 июл 2024
- CWU's Nick Zentner from his home in Ellensburg, Washington on Saturday, May 16, 2020 during the global coronavirus pandemic. Milankovitch Cycles, climate history, ice cores, deep sea sediment cores, astronomy, etc.
![CENTRAL CEE - GEN Z LUV [VERTICAL VIDEO]](http://i.ytimg.com/vi/VIbidJm9q34/mqdefault.jpg)
Just discovered Nick, and started binge watching his geology stuff. Astronomy is my main thing. I'm sure someone else mentioned this, but at 54:00 Nick gets a bit stuck explaining the effect of precession on climate. It's kinda subtle, as it's an interaction between precession, eccentricity and the distribution of Earth's land masses. Northern hemisphere midsummer currently occurs quite close to aphelion -- the Earth is furthest from the Sun around July 4th-6th. Conversely, it's northern hemisphere midwinter near perihelion, when the Earth is closest to the Sun. Half a precession cycle (13,000 years) later it's now northern hemisphere winter at aphelion and summer at perihelion. There's more land in the northern hemisphere and that's better at absorbing sunlight than the ocean which predominates in the southern hemisphere. At perihelion there's slightly more solar energy available due to being closer to the Sun. The northern hemisphere with its greater land mass is better at mopping up that extra heat than the southern. Consequently. when northern hemisphere summer occurs at perihelion the Earth warms up overall. Right now, that effect is close to its minimum.
55 years old and I finally get it!😀Thank you so much for sharing. You truly have a gift for presenting information. Seriously enjoyed this presentation and look forward to watching more.
I wish all my teachers, instructors, professors back in the day were like Nick.
They were just like Nick but they were closet alcoholics.
Some of mine were, but none of them were geologists.
Still great in September 2022! Thanks Nick for all the programs you've done and your wonderful humor!
Nick makes me want to be a geologist. It’s so fascinating, I wonder what he sees when he looks at the close up pictures of Mars terrain ... and Nick is the kind of guy who would be an authentic friend to everyone.
I came back to watch this Nick Zentner explanation of the Milankovitch Cycle because it's come up now in other arenas talking about climate change, wobbles and changes on Earth.. Zowie! THANKS, NICK! I love that I learned this from you last year!
THIS IS SO STINKIN' INTERESTING. THANKS SO VERY MUCH! 😊
So glad you didn't poke your eye out w/the earth-apple-top-chopstick-knitting needle contraption, especially after guzzling half a gallon of Tanqueray.
Good on ya bro👍
My only interest in either side of the manmade climate change revolves around my ability to achieve a solid harvest from my crops. The changes in moisture amount and timing coupled with available growing temps has made it increasingly difficult to produce a good harvest. Looking at my records that go back 50 years for my farm it has been diminishing for the past 15 years and especially in the past 5. My corn, wheat and tomatoes seem to be of the opinion that we are in a cool cycle.
:(
magneticreversal.org should open your eyes to the man made climate change hoax. LOOK TO THE SUN FOR CLIMATE CHANGE ANSWERS.
NOT THE MSM and their propaganda of lies.
Nasa is now (finally) admitting to manipulating the weather using planes to spray high up in the atmosphere. It has created an imbalance. They admit that too... They are just making it worse and worse.
When I first read about the Milankovitch Cycles several years ago, and reading about impact of Three Gorges Dam on the Earth make my curious about the effects of tectonics over the time on eccentricity or even wobble.
Thanks for the free vids on geology, it’s always been a fascination of mine.
Stuff I have never heard before. This was just great. Thank you! I am grateful that you are doing these sessions in this time of peril. My education has been advanced and I look at my world in a different way.
Dear Nick, I found this by accident and am delighted! I watched all of your previous RUclips presentations, and now I have a whole new geology series to binge watch! Nick's back, MommaD is happy! ( Just the fact that you have a gallon of T juice could be concerning LOL)
*SUBTITLE:* Re-purposing a Tanqueray jug:
1. Lamp base.
2. Mohs hardness test surface.
3. Live stream quarantine canteen.
Nick. I cant tell you how much I appreciate you, your passions for geology, teaching, your students AND the learning process. Dont say you have "some skill" as a presenter. I found ypu while researching "best RUclips instructors for a boring topic". Lol. I wanted to find what made them successful. I have since lost that job and contract. But i keep watching you and am now considering a career pivot at 45 INTO geology. Thank you, @nickzentner
Sorry I didn't get to watch this live; would have super enjoyed it. I remember the axis wobble and obliquity from when I took Intro to astronomy in 1969! (yes, I'm that old! Had a summer course, so we had an informal class pot luck one Saturday in July to watch Armstrong go walkabout--live). I picked up added info on both of these over time, but the changing eccentricity is new to me. Thanks. (N.B. Our astronomy text was co-authored by our instructor. So after Armstrong took his walk, we razzed him abt his book having gone obsolete over the weekend....)
Love your videos, Professor. Thank you!
1958, the International Geophysical Year, ice cores in Greenland, I was 13 and fascinated!
Nick you are awesome!!
As always thank you for taking the time to answer our questions and for presenting such engrossing topics!
My god this is brilliant! Thank you for sharing!
Hello I'm watching you on replay! Gotta love it!
Good evening! It’s been a long day! Glad I can relax and learn something cool!
I love this episode. I was taught the cycles in a biogeography class but it is not something that sticks in the brain . Thanks!
Yep I had that booklet from Joe McMacken as a kid back in the 70s, I believe we picked it up at the Dry Falls visitor center. FWIW, 65°N is the latitude of Fairbanks AK.
I have a copy of that Ken Hamblin textbook (Earth’s Dynamic Systems) and it is truly a great resource...got me hooked on the subject. You are a wonderful educator: keep the videos coming. Thanks.
I found the video. So glad you like the book. Keep up the good work. Spreading and sharing your knowledge is a good thing.
Love the lectures nick. As a chemist they all have made me wonder should I have done geology modules.
I'm going back over some videos that I missed and or had seen to further my personal study. This summer is spent learning more in ice ages and volcanos. Yes very separate geology topics but areas I want to learn more about. I knew so little about Milencovich (sp) that I doubted it completely. I did my undergrad work from "68 to '71.my only exposure to ice ages was in intro to anthropology as part of influences on paleoanthropolgy. Now I understand more of what it is. The fact that ice cores are supportive of the cycles for me is "the finger pointing to supportive research ". I admit that being inundated by what I call junk science crackpots has caused me to roll my eyes and leave the room when someone brings up these cycles. Thank you, Nick for being the respectable scientist taking time to explain it at an elementary enough level that I can grasp what it is about. I'm very careful about checking the background of youtube science presenters. Nick, i knew about you through PBS before there was youtube. So , I knew you could be trusted. Last month I saw my primary doctor. He always checks in my brain functioning. Appropriate because I'm 75 and seriously ill. I told him about my geology study. His response was "we won't worry about your brain." I'm following my mother's example. At 86, she got out her Latin textbooks and started translating English into Latin to wake up her brain. You are helping me learn.
Thanks, Nick.😊
Nick, was not able to join the live presentation, but enjoyed your talk on "replay." You referred to Dan Britt's presentation (thanks!) which included a key fact making the relevance of the Milankovitch Cycles more clear -- at least to me -- and which explains how the climate during the past 30-40 million years differs from previous periods. He referred in his presenatation to the collision of the Indian subcontinent with Eurasia and the resultant rise of the Himalaya mountains as an unprecedented event which, due to massively increased rock weathering from new rock exposure from uplift, soaked up a large amount of CO2 from the atmosphere. As a result, the climate became far more sensitive to inputs such as the variations in solar energy resulting from the Milankovitch Cycles than was the case in the previous, high CO2, atmosphere. I guess the message is that because we are pumping more CO2 into the atmosphere, we may be moving back to the previous "normal" climate of more than 40-50 million years ago. To me, this was a key point in understanding the relevance of the Milankovitch Cycles to climate and to current climate change. They have always been there, but only affect climate in a "low CO2" atmosphere like we have had -- somewhat uniquely -- over the past many tens of millions of years.
These are interesting consequences. I prepared for my exam about glacials and I knew that CO2 was important, what I did not know was how to quickly erase it from the atmosphere. Make a limestone on a seafloor! It is so simple. Thank you.
i guess im asking the wrong place but does someone know of a tool to get back into an instagram account..?
I somehow lost the login password. I would appreciate any help you can offer me!
@Kaleb Alessandro Instablaster ;)
@Conrad Seth i really appreciate your reply. I found the site thru google and Im in the hacking process now.
I see it takes quite some time so I will reply here later with my results.
@Conrad Seth it worked and I finally got access to my account again. I am so happy:D
Thank you so much, you really help me out !
Hello from California's Mojave Desert!
Love your dedication to objectivity. Seems to be a lost art.
Milankovich Clearwater Revival was favorite band at Woodstock man took forever 😭 to listen 🎶 to though
This was a really effective presentation because it made this complex material accessible in a fun and visual way. I think the greatest challenge to public understanding of this data is the failure of our culture to value the scientific method and knowledge derived therefrom. Thanks to you Nick for making this real for us, and sharing your own learning curve in a way we can all apprehend and appreciate.
Thank you for the lecture!
Pretending that was water was brilliant.
It's even more interesting given the fact the cycles have been identified in the geologic column.
Incredible that it is an almost serious disclaimer that this lactures is not suitable for people that do not believe the earth is round or revolves around the sun,.
Unbelievably they are still with us. Only now that they get to compound their lunacy with conspiracy theories (I really dislike using those two words together) involving everybody from the Freemasons to the Jesuits. Who really do not like one another by the way. Every piece of evidence that they are shown is deemed to be fake.
It is one thing to have doubts about a particular subject. Climate Change could be one example. I have certain doubts about whether all of the warming we are seeing is related to human activity. I agree we are having an effect. I'm not entirely sure how much is related to us. I still haven't seen a good explanation for the causes of such climate phases as The Medieval or Roman Warm Periods. Or the climate downturn during the Little Ice Age or the apparent cooling during the so called Dark Ages. Or any of the other climate swings that can be seen from the data in Ice Cores. Everytime I get into a discussion with someone about this I always say if you want to talk about climate change let's talk about the climate change 15k odd years ago. Perhaps the Sun is a little more variable than we think it is. If Solar output varies by say .5 to 1% over a 500 year cycle (I'm just grabbing numbers) that would have a major impact on climate. We really haven't been collecting data that long to be sure. And the only way to reliably collect such data is from space in my opinion.
One bad thing about the internet is it has given the crackpots a much taller soapbox from which to scream their nonsense. And it can be about anything. There will be some guilable individuals who will buy into their nonsense. Add in Patreon and GoFundMe. If these charlatans are knowingly spewing lies and raising money for their own gain wouldn't that be the equivalent of a con game.
But the Internet and some of its tools are also allowing the amateur to sometimes make observations that are hard to explain.
I'll site on example. It is fairly common for large monumental structures to be oriented to true North. Not all structures but a good number of them. This was more common in ancient times than today simply because it made surveying the building site easier. There are a large number of structures all over the Earth than can be found on Google Earth that have this built in orientation. Yet there is another group of ancient buildings. Found on different continents that are oriented to a point approximately 47° W and 77° North. This is over Northern Greenland. There is another set of structures oriented to the same longitude but roughly 65° North. A fourth set is oriented to the same longitude and the southern tip of Greenland. The person involved attributes this to true polar shifts versus the magnetic pole wandering. He also goes off the deep end in other areas. Such as Humanity originating in South America and the expanding Earth fantasy. I don't buy into his ideas one bit. Except the physical orientation of these groups of structures makes a mockery of co-incidence. See Mario Buildreps. As I said a I don't agree with his ideas. It's the orientations I find intriguing.
Another example of ideas that do not fit the mainstream is the dating of the Sphinx. When Robert Schock first presented the idea that the Sphinx is much older than it is supposed to be based on the errosion on the Enclosure walls versus the climate history for the region the acceptance in the geological community was reasonably supportive. In the Egyptology community, not so much. Schock was not the first to pose this question of the weathering anomaly. When an independent researcher, John Antony West, found that various researchers in Egypt including Flinders Petrie were of the opinion that the Sphinx was older than was generally thought he approached a number of geologists to obtain their opinions. When shown photographic evidence they were of the opinion that the errosion was of great age. When shown the rest of the photographic evidence that put the errosion into a physical context they literally would not touch the project. As I recall some of them supposed had noticed some of this before but let it be as it was outside their field of study. Was there a precursor civilization in the Nile Valley? If there was the main evidence is likely buried under 100 meters or so of silt in the Nile Valley.
Do I accept any of this. Mostly no. But I also understand that there is a lot about our past we simply do not know. How long have people lived in the Americas? One problem is the old coastlines are underwater. Another is the massive floods at the end of the last glacial period and the errosion they caused. The PNW is a prime example of this. Also along the west Coast if the first people arrived by boat being primarily hunters of seals and other species. The barriers of the Cascades, the Seirra Nevada and the Rockies being capped in glaciers would have presented a substantial barrier. As would some of the wildlife. The Giant Short Faced Bear for one. It would not surprise me if people have been living in the Americas for 25K or 30K years.
The process of natural selection would have removed them by now but we have protected the weak and stupid for so long that they now surround us. Common sense is so rare now that it should be considered a superpower
Thank you Professor. The overall variables of the Milankovitz cycles are much clearer to me now. I love how you can categorize and show relationships between data points. Good polished job. Hard to believe it was a first time effort. Took some screenshots to see if I can parse out broad dates of the maximum and minimum temperatures using Obliquity, Procession, and Eccentriciy. That is if my sleepy brain doesn't rebel. :)
Brenda I think you might enjoy ( ruclips.net/video/_MTRAeJPkFI/видео.html ) please let me know what you think👍
@@lyndacathyleenstead1467 Hi Linda. I deeply respect Ben's work at Suspicious Observers. Much of his material is over my head, but I have learned from his videos. Have you gone to his conferences?
Brenda Doyle , Alas I have not my hope was to go to the last one that got canceled. I’m hoping to attend in the near future. I’ve been a subscriber for 5 yrs. I have added many other fantastic instructors including Nick Zentner during this time. I’m a true fan.
Wonderful to see you tackle this subject that adds some of the the natural effects to the mix of climate change science.
Croll published a book in 1875!! Seems that he is the one who needs recognition.
Nick I just have to say I appreciate your work. Been following your classes. You have peeked my interest of geology. I truly enjoy watching. Hopefully I can sell my house in Humboldt county and move closer to the college to become a major in your program. So thank you again.
These lectures are wonderful. Just found them and how to view them while recovering from knee surgery. You are appreciated!
The discussion of ice core dating is fascinating. Wonder if the botanists who study tree rings could use them for comparison with the ice lines for the years available.( Top number about 5000 years unless these can integrate with fossil tree rings.)
Thank you for your time, I Just started watching see it you explain what happens at 90 degrees position on the wobbling trajectory. Looking forward watching your lecture
The name on the Milankovitch Cycles video Nick recommended has changed to "Nature's Milankovitch Cycles and their profound effect on Climate Change, Ice Ages and the Seasons", and can be found at ruclips.net/video/4GUcn07enz4/видео.html
Thank you!
The Robins
"look at this dude. He just keeps talking to himself"
Nick, this was awesome! Thank you.
Thank you, I share your knowledge, I appreciate you.
thank you so much for talking about the Milankovich cycles. I learned about them in my retired years when I took 3 Semesters of astromony at a local junior college. They seem confusing at first , but eventually made great sense to me. I am intrigued by the interaction of astromonical phenomana and Earth's gelogical processes. one example is how the Moon was once very close to the Earth but has over billions of years moved farther away. the moon not only creates our tides but also stabilizes our obliquity. What else might it influence?
I had hoped to contine taking classes in geology but life got in the way. I have loved your lectures so much.They are filling a large void in my understanding of Earth's physical processes. They also give me hints on how to interpret the vast amount of data coming in from Mars.--Linda Fisher
1st class sir! Thank you!
Thanks Nick
Up here in British Columbia Canada. On my dad's first jobs after he left a homestead in Northern Alberta was working in mines, and became a geologist helper up in Premier BC out of a goldmine. Later he also worked at Cassie are asbestos. I was a bored high school student starting in the 70s.
The curriculum was boring, so I took a few classes by a correspondence. I took Russian for my language requirement under the graduation rules, and also basic astronomy, astrophysics and then geology.
A couple of sentences in which the name Milankovitch appeared in one of those courses and I became interested.
My dad who knew Russian, did translation work for the Canadian government, all too often parts of trade agreements like equipment manuals and repair guides. But occasionally sensitive stuff
On one of his final trips to Vladivostok, he picked up his few papers, written in Russian.
They had a bit of astronomy in it, inconclusive followup studies trying to prove or disprove it done in Russia or one of the satellite countries.
Hi! I'm from Hungary and I work with Milankovic-cycles for my MSc Thesis so I really know exactly how hard to understand this whole phenomena. You summarized it really well apart from that you learned it in the recent days. The only thing, as far as I know, the glaciations occur at eccentricity minima not maxima, but I'm not quite sure of it. Anyway in these days I really appriciate your work! I often miss the live stream but I use to watch them later. You teach very understandable and I really enjoy your videos, thanks for your work!
I think you may enjoy (ruclips.net/video/_MTRAeJPkFI/видео.html ) Suspicious Observer
@Bob Trenwith Hello! Thank you for your correction! To be honest I'm really strugling to find a proper explanation. Most of the articles that I found says the maximal volume of the polar ice sheets occur at eccentric minima (yeah, I noticed I said glaciations instead of maximal volume of ice, maybe that was the problem), is this also false?
@Stanley Goddard nothing wrong with that, if anything it just shows how driven he is . He also believes what he is selling which makes him alright in my book . I'm a fan of Ben Davidson's suspicious observers channel and Douglas Vogt at the diehold foundation. Cheerfully nick zetner is also a truth teacher too , so I've just subbed here , along with sacred geometry randall Carlson and Graham Hancock. I don't have to believe in everything as I'm critical enough to sort the wheat from the chaff . Mainstream media is for the misinformed people and when I want to watch it I can read between the lines (!lies)
Nick, Some of the eccentricity is to do with whether the Northern hemisphere has a long summer or winter. The earth moves quicker the closer it is to the sun and slower otherwise. At the moment the southern hemisphere has the shorter summer. Thanks again for all your work. Our lockdown lifted a little this week so I walked to High Cup Nick. I love it!
Really? Here in Brisbane summer just ended this week and pretty much started September 1. Longest summer ever!
Thanks to corona I can take your lessons. Being quite old and sitting in Germany.
Shout it out been doing this for years.. Good presentation.
love your intelligence and your videos
Hi gang ...better late than never.....nice paint job Alex...ya gotta like it...Just got to the blind TA...you had some really good teachers Nick...
Thanks for all these fantastic lessons Nick you Rock..(see what I did there)really enjoy your teaching style, it has the essential much coverted 3 E's. Engaging, Entertaining and Educational. Thanks for guiding this curious eger Geology Noob.
Matt, Ipswich Suffolk, UK
MIlankovitch Cycles, particularly the eccentricity cycle, do match up with the glaciations. But there are deviations from what the Milankovitch theory predicts. Classic example is the Younger Dryas episode. A sudden cooling much faster than would be caused by the Milankovitch tilt and precession variations. 1500 years later, we get Meltwater Pulse 1b. The last million cubic miles or so of ice sheets drain into the oceans is a very short period of time. Plato describes Meltwater Pulse 1b in Critias wherein he describes the filling of the Aegean Sea and the sinking of Atlantis. Major volcanic eruptions, much bigger than St Helens, or impacts by large comets and asteroids, could cause a sudden cooling with the dust reflecting sunlight. Is the 400 ppm carbon dioxide level of the present day delaying the new ice age Milankovitch predicts? Perhaps, but I have my doubts that carbon dioxide has more than a minor effect on the climate. Nick doesn't tell us, probably because he is still trying to learn it, but the reason that the Precession of the Equinoxes affect the climate is that presently the northern hemisphere summer coincides with the aphelion of the Earth's orbit. Meaning we are the farthest from the sun during the summer. In 13,000 years, our northern hemisphere summer will coincide with the perihelion, the closest that the Earth is to the Sun. The Gregorian Calendar we use tracks the Precession of the Equinoxes, keeping the summer solstice at June 21. Apparently being close to the Sun during the Northern Hemisphere winter reduces the snowfall by reducing the length of time the Earth spends in the part of its orbit where the Northern Hemisphere is away from the Sun. Even though we are farther from the Sun during the Northern Hemisphere summer, we spend a bit more time in that part of our orbit, giving more time for glaciers to melt. Milankovitch incorporated the Precession into his cycles for his theory of the ice ages, but it was known since ancient times.
Very interesting. will take it further.
Thanks for another excellent lecture, Nick. One thing I think you could have mentioned -- it was illustrated on several charts but you didn't talk about it -- is how multiple cycles can reinforce a trend or cancel each other out. Think of two sine waves of slightly different frequencies, but starting at the same time. As time passes, some peaks will coincide, summing the peaks; other times, when a peak and trough line up, they will cancel each other. Sometimes it will be a little of both. And there can even be a third cycle created, called a beat note for audio and a heterodyne for radio frequencies. This concept can explain many of the resulting chart curves in a purely mathematical manner. Maybe this can make them less mysterious.
Love this.
Ice core/sea bed core samples prove co2 lags behind temperature rise. Good luck Nick.
Im so sad that ive missed so many of these
Using one of those world famous Washinhton apples. Well taught. Any kid that doesn't know about a"TOP" will be very hard to explain its properties. I studied computer science with a blind student at MSU in the 80's. He was a lot better than me. I now subscribe to the meteoric influence on climate analysis over this past 13,000 years. I also support your side of this interesting debate when it is scientifically based.
Nick, I enjoy your videos. Am I correct in seeing a correlation between the last tilt maximum in 8,700 BCE and the beginning of farming/herding? I'm a flutist, so I don't know.
Hello, Patrick, from Drouin, Victoria, Australia. I am excited about your puppy! I would like to get one, but I think my cat, Ginger, would not like it. I hope I see more about the puppy from you as I continue to work my way through these un-livestreams.
Now I'm ready!!
Hope you don't mind I told Emergency Management Associates about the green granite video where you described west Coast subduction as they were theorizing and you clearly presented the evidence
Greetings from Top of the Bay on LI Sound NY
JeriGale Cohen Fitzgibbon Shane
Fascinating. It seems like looking at the data pattern of sun cycles should be compared or overlaid on this. Amount of heat created by sun activity, types of radiation emitted, etc.
The "effective" tilt angle is a function of both tilt angle and the wobble. Sometimes they'll contribute to one another and sometimes they'll cancel each other.
Wobble also changes when seasons begin and end, but that's not important to predicting ice formation.
Correction: When your seasons begin and end matters when you consider eccentricity. If your axis points away when your nearest the sun you'll get the most ice formation in the northern hemisphere.
Are a Suspicious Observer? ( RUclips) your info is wonderful as always thank you. Was in the audience in February in Moses Lake with my family and the dog. We live at Coulee Dam and neighbored community’s. I am addicted to you channel and you have turned me into a great student along with several others of your caliber.
Thank you 🙏
Very well presented.. I am like you and like to have facts you can "lay your hands on"
Love the 32:11 comment. Couldn’t stop laughing.
Where are we int polar precession cycle? Now the axis is pointed close to Polaris. In about 12000, it will be as close as it gets to pointing toward Vega. A full cycle (Polaris to Polaris) takes 26000 years, it's been about a thousand years since the axis was pointing as closely as possible to Polaris.
I'm watching playback (thank you for making these available) so I'd like to add my 2c to theories on you audio problems Thursday. I noticed they seemed to coincide with when you had a specimen at the back camera, thus when your mouth was closer to the front camera/microphone. They often ended when you backed up. Hope that helped. ie. I hope you read these.
Watching from New Braunfels, Texas - home of the Hoity Toit
I grew up in SanAntonio and use to go to New Braunfules for tubing down the river when we where teenagers- fun times
Would the sunspot cycles also have an effect ? Also, is there any thought about if the earth's magnetic field flip have any effect on ice formation?
I would like to hear your thoughts on the expanding earth theory. Make a video please.
Love you and the content.
Oh, how well I recall tops and the game thing!!
Very cool video! Where can I find information on the earth's shifting equator and magnetic pole shift?
Classic In Search Of...w/Lenerd Nimoy-Coming Ice Age (78 ish) confirm's everything your saying !
Wards book Under A Green Sky fits right in with this.
Is it just me or does anyone else think Nick should pick up the marguerita over to his left and drink it?
POE
Precession - 26,000
Obliquity - 41,000
Eccentricity - 100,000
"And the lamp-light o’er him streaming throws his shadow on the floor;
And my soul from out that shadow that lies floating on the floor"
I have to wonder if the eliptical cycles coincide with the polarity flips.
During a glaciation period the weight of the glaciers pushes down the continental plates. Thus the quantified flexing the plates should be correlatable to increased volcanism.
It takes 26,000 years to complete one full cycle, at 180 degrees 13,000 years halfway the inclination axle wobbling changes to the apposite, north hemisphere summer seasons june changes for winter ,and vice versa for south hemisphere. My question at 90 degrees 6,500 years quarter of the turn, will summer/winter seasons will be occurring on the equinox (spring/autumn) ? Because at that point the 23.4 inclination will be sideways at the solstice, and tilted at the equinox. I hope you can understand what I mean. Thank you two weeks ago I was learning about milankovich that moment on the precession at 90 degrees called my attention.
The best use of an apple in Astrophysics.
Magic..all with just a light bulb and an apple with a knitting needle through it. I get it. Thank you thank you thank you.
For some of you watching Geology is the study of the Earth, past, present and future. All sciences are involved including inferred climatology and meteorology. The rocks and cores of the Earth are the recording medium. You can infer cycles and and causality by careful study.
I can't seem to find The Amazingly Beautiful Milankovitch Cycles video. Any possibility that you could post the link to it in the comments or in this video's description above?
t=1:05:30 I miss a summation of the graphs compared to the ice graph.
You're wrong. According to Milanković, we are in the process of warming, not cooling. As long as we don't lose the polar caps, only after that we enter the cooling process. Greetings from Serbia
1:29:44 You hold your liquor well. Obviously the convenient handle on the Tangueray bottle.
This is everything in the foundation of climate! Every other variable from volcanic eruptions to sun spots to solar flares to planet impacts from space to micro nova flashes all play a role in the scale but this factor is the foundation that can be placed on paper as a place to calculate EVERYTHING ELSE OFF OF!
Im 44 I live in Oklahoma I'm from Pennsylvania but I lived in Bonners Ferry Idaho from 2010 to 2015 and traveled working on the Grain Elevators updating screw augers to drag chain lines all across Montana Idaho Oregon and Washington From Tri Cities to Mansfield and Windust and Chalane and Grand Coolie and what I saw and learned out there about this planet is the one thing that WILL ALWAYS REMAIN THE SAME IS IT IS ALWAYS CHANGING!
That is how you know what's true cause it's always ironic! lol
Thank you for all you do!
T. Ryan Amrhein
All three cycles do combine to affect climate. But what about the 4th factor. The global distribution of continental crust and how this can affect the oceanic distribution of tropical warm water to higher latitudes. The current Ice Age actually started around 34MYA when Antarctica finally separated enough from South America and Australia to allow the Circumploar Current to form in the Southern Ocean. This allowed the formation of permanent ice sheets. For the Northern Hemisphere it took until around 3.5MYA when tectonic forces allowed Central America to block the transfer of warm Pacific water into the Atlantic Basin. This is when the current Northern Hemisphere began its current glacial advances and retreats. As i under stand it this is also when Greenland began to freeze over.
Sorry,a very late question....I heard that the magnetic pull of the moon effects the wobble of the magnetic pole?