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EarthCache

Faszination Nordkap - post-glasiale landløfte

A cache by H-U-P Send Message to Owner Message this owner
Hidden : 6/5/2012
Difficulty:
2.5 out of 5
Terrain:
2.5 out of 5

Size: Size: not chosen (not chosen)

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Post-glasiale landløfte.

Nordkapp ligger på 71ste nordlige breddegrad på den nordlige kanten av Skandinavia.

Skandinavia var om lag 1,7 millioner år dekket (bedeckt) med en 3 km tykt lag av is.

Vekten av isdekken/innlandsisen var cirka 3000 tonn per kvadratmeter.

Dette er nesten like mye som 800 fullastende lastebiler veie.

Vekten av isen har skjøvet på halvøya Skandinavia, ned i mantelen – landet har sunket.

Denne prosessen er bare mulig, fordi mantelen er dynamisk viskøst – det vil si det er tyktflytende mobil.

Isen har smeltet cirka 10.000 år siden.

Vekten av isen ikke lenger er tilstede.

Så kan halvøya Skandinvia løfter igjen.

Ved tyktflyktende bevegelse av jordas mantel, er denne prosessen fortsatt pågår i tusenvis av år.

Norkapp løfter for tiden cirka 10 millimeter per år.

2012 ligger Nordkapp på en høyde på 308 meter over havet.

Ifølge denne beregningen, Nordkapp er i år 3012 i en høyde av 318 meter over havet.

Det er 10 meter høyere enn i dag.

Dette eksakt måling er mulig bare for noe år siden.

Den brukes måling av den globale bestemmelse av punkter.

100 år siden var presisjonen av denne målingen cirka 100 meter.

Idag er presisjonen nesten 3 millimeter.

Målingen er laget av gravimetri.

Tyngden akselerasjon er målt på jordens overflate.

Dataene er beregnet i avhengighet av rotasjonen av jorden og jordens masse.

Forskere prøver å bevise til dato:

På grunn av heving av landmassen i Skandinavia, tryker landmasse i Sentral-Europa i mantelen.

Dermed blir høyden på land i Sentral-Europa redusert til 1 millimeter i år.

Til denne målingen, dataene blir evaluert fra to satellitter GOCE og GRACE.

Sattellitene flyr i en høyde av 400 Kilometer med en avstand av 220 kilometer på jorden.

De beregner forandringer i gravitasjonsfelt av halvøya Skandinavia meget presist.

Fra det beregnes post-glasiale landløfte.

Den post-glasiale landløfte er en geologisk fenomen.

På Nordkapp tar denne prosessen flere tusen år.



Postglacial land uplift

The Northcap is on 71th of northern lenght directly on the top of Scandinavia

The hole peninsula of Scandinavia was protected with an ice cape which was 3km high.

The boulder period was 1,7 millions of years.

The weight of the ice was about 3000 tons per sqaure kilometer.

That is nearly the weight of 800 big full loaded lorrys.

This heavy weigt pressed the peninsula of Scandinavia in the earth´s mantle – so the land was depressed.

This procedure was possible because the erath´s mantle is dynamic touch flowing – what means he is gooey movable.

Ice melt 10.000 years ago.

So there was no longer the weight of the ice in Scandinavia.

Now the peninsula of Scandinavia could raise up again.

Because the earth´s mantel is gooey movable this procedure is a very long procedure it takes severall of thousands of years.

The Nordcap actually raises up 10 millimeters per year.

2012 the Nordcap is 308 meters over the ice sea. It means, his high is 308 meters over mean sea level.

Whit this process Northcap in the year 3012 is in a high of 318 meters over mean sea level.

That is 10 meters higher than today.

This accurate measure can be done since a couple of years.

The measure is the methode of global point determination.

100 years bevore the accuracy of this methode was round about 100 meters.

Today its just 3 millimeters.

The accademics use the methode of gravimetric analysis.

They detect the acceleration due to gravity on the surface of the earth.

The result is in connection of the rotatuion and the mass of the earth.

Accademics actually try to demonstrate:

Because of the land uplift in the peninsula of Scandinavia the landmass in cetral of europe goes down in the mantel of the earth.

Central Europe goes down round about one millimeter per year.

Tho do this measure the accademics use two stallites one is GOCE the other GRACE.

This satellites fly in a high of 400 kilometers one behind the other in a distance of 220 kilometers.

The two satellites calculate very exactly the chancing of the gravitation field in Scandinavia.

With this results they can give us informations about the postglacial land uplift.

The postglacial land uplift is an inimitable geological phenomen.

At Northcap this process will work of severall thousands of years.


Postglaciale Landhebung

Das Nordkap liegt auf dem 71. nördlichen Breitengrad am nördlichen Rand Skandinaviens.

Ganz Skandinavien war etwa 1,7 Millionen Jahre mit einer 3 Kilometer dicken Eisschicht überzogen.

Das Gewicht der Eisdecke war pro Quadratmeter ungefähr 3000 Tonnen.

Das ist fast so viel wie 800 voll beladene Lastwagen wiegen.

Das Gewicht es Eises hat die Halbinsel Skandinavien nach unten in den Erdmantel gedrückt – das Land hat sich gesenkt.

Dieser Prozess ist nur möglich, weil der Erdmantel dynamisch viskös ist – das heißt er ist zähflüssig beweglich.

Das Eis ist vor etwa 10.000 Jahren geschmolzen.

Das Gewicht des Eises ist nicht mehr gegeben.

So kann sich die Halbinsel Skandinavien wieder heben.

Durch die zähe Beweglichkeit des Erdmantels dauert dieser Vorgang noch mehrere tausend Jahre an.

Das Nordkap hebt sich zurzeit etwa 10 Millimeter pro Jahr.

2012 liegt das Nordkap auf einer Höhe von 308 Meter über dem Meeresspiegel.

Nach dieser Berechnung liegt das Nordkap dann im Jahr 3012 auf einer Höhe von 318 Meter über dem Meeresspiegel.

Also 10 Meter höher als heute.

Diese genaue Messung ist erst seit ein paar Jahren möglich.

Es wird die Messung der globalen Punktbestimmung angewendet.

Vor 100 Jahren lag die Genauigkeit dieser Messung bei etwa 100 Metern.

Heute ist die Genauigkeit etwa 3 Millimeter.

Die Messung erfolgt über die Gravimetrie.

Dabei wird die Schwerebeschleunigung auf der Erdoberfläche gemessen.

Die Daten werden in Abhängigkeit der Erdrotation und der Erdmasse ermittelt.

Wissenschaftler versuchen aktuell zu beweisen:

Durch die Hebung der Landmasse in Skandinavien drückt sich die Landmasse in Zentraleuropa in den Erdmantel.

Somit verringert sich die Land Höhe in Zentraleuropa im Jahr um 1 Millimeter.

Zu dieser Messung werden die Daten von zwei Satelliten GOCE und GRACE ausgewertet.

Die Satelliten fliegen in 400 Kilometer Höhe mit einem Abstand von 220 Kilometern um die Erde.

Sie berechnen sehr genau die Schwerefeldänderung der Halbinsel Skandinavien.

Daraus wird die postglaziale Landhebung berechnet.

Die postglaziale Landhebung ist ein geologisches Phänomen.

Am Nordkap dauert dieser Prozess noch mehrere tausend Jahre.


To log the Cache please answer the following questions:

  1. In which period of the earth is postglacial land uplift working?

  2. Explain the meening of the thing you can see in front of you if you look north in your own words.

  3. On the koordinates and behind you south - you can see grinding tracks which was built in the rock of north cap from the going (melting) ice. Please explain in which cardinal direction this marks drift, so you can better understand how the last ice age works.

  4. If you like – but it´s not necessary for your log – please post a picture from you with you GPS at the Koordinates feel free logging after sending me the answers. It´s not necassary waiting of an answer from me! After your log you are allowed to discover the Northcap Coin "NOJAVE"

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Last Updated: on 6/24/2018 5:13:40 AM Pacific Daylight Time (12:13 PM GMT)
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Coordinates are in the WGS84 datum

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