Land uplift with hinge-lines in Fennosoandia. by Matti Sauramo

Cover of: Land uplift with hinge-lines in Fennosoandia. | Matti Sauramo

Published by Suomalainen Tiedeakatemia in Helsinki .

Written in English

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SeriesSerie A. Geologica-Geographica -- No.44.
The Physical Object
Number of Pages25
ID Numbers
Open LibraryOL20233743M

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Get this from a library. Land uplift with hinge-lines in Fennoscandia. [Matti Sauramo] -- Geologie - Skandinavien. The Fennoscandian Land Uplift Gravity Lines. The named stations on the line 63ºN are used in this paper.

The isolines show postglacial rebound rates (mm/yr) relative to mean sea level according. Request PDF | The Fennoscandian Land Uplift Gravity Lines – | The Fennoscandian Land Uplift Gravity Lines (sometimes called Nordic Land Uplift Gravity Lines) consist of four east-west.

The Fennoscandian Land Uplift Gravity Lines (sometimes called Nordic Land Uplift Gravity Lines) consist of four east-west profiles across Land uplift with hinge-lines in Fennosoandia. book Fennoscandian postglacial rebound area, along the approximate latitudes 65°, 63°, 61°, and 56° by: We compare land uplift values from three techniques, GNSS, tide gauges and absolute gravity, with the Nordic Geodetic Commission NKGLU land uplift model for Fennoscandia.

Abstract. A simple, viscous flow model is applied to recent land uplift data in Fennoscandia. Based on this model the secular rate of change of gravity and the geoid are estimated. 18 years of repeated gravity measurements on the precise gravity lines in the region are analysed.

The history of the recording and interpretation of the Fennoscandian uplift illustrates the main history of Earth sciences because the results obtained had (and still have) immediate impact of the interpretation of a large number of fundamental problems in Earth sciences.

Thanks to a paper of De Geer inthe glacial isostatic origin was established. Fennoscandia became the classic area of. In late s the Swedish geologist Gerard de Geer was able to show the relation between ice age, ice recession, land uplift in Fennoscandia and land depression in southern Sweden (Bailey Seismicity of Fennoscandia does not show a close association with the area of maximum uplift.

Different rheological models proposed for the mantle below the Fennoscandian shield are reviewed and it is shown that the available data on the rates of uplift for the last years are more compatible with a low-viscosity (10 20 P) asthenosphere of.

In this paper, a collection of data underlying empirical land uplift modeling in Fennoscandia is presented. The data set is available at ANGAEA (Pohjola et. Summary. There are many reasons to assume isostatic readjustment taking place in the low-velocity layer.

In this case postglacial uplift of Scandinavia gives th. BACKGROUND The land uplift in Fennoscandia is well documented from studies of ancient shore lines and more recently from repeated precise levellings and tide gauge observations.

A compilation of the observed land uplift from various sources (Ekman, ) is depicted in Fig. It shows a maximum uplift of 9 mm/year in the northern part of the. The Fennoscandian uplift and glacial isostasy. In: H.K. Gupta (Editor). Lithosphe: Structure, Dynamics and Evolution.

Tectonophysics. Various hypotheses have been put forth in relation to the land uplift of Fennoscandia, which is well documented both by geological and geodetic observations. An analysis is made of the results from all repeated gravity measurements of the Fennoscandian land uplift gravity line 63°.

The line is, thereby, divided into two separate parts: one part west of the land uplift maximum, and the other part east of the land uplift maximum. A statistically significant change of gravity is found both for the western part and the eastern one.

2. Determination of land uplift in Fennoscandia from AG and GRACE data Observing present-day land uplift with absolute gravimetry. Inthe Institut für Erdmessung of the Leibniz Universität Hannover has received a new absolute gravity meter Land uplift with hinge-lines in Fennosoandia.

book the FG5 series, presently the most common gravimeter model. This is the fifth volume in the Oxford Regional Environments series. The series is devoted to major regions of the world, each presenting a detailed and up-to-date body of scientific knowledge concerning a particular region.

Fennoscandia is composed of Finland ('Fennia' in Latin) and the Scandinavian peninsula (Norway and Sweden). A team of experts presents the physical geographical factors 5/5(1). An uplifted coast is one that undergoes continual or stepwise uplift (Mörner, ). Emergence implies that the shoreline is displaced seaward and that land emerges from the acial uplift denotes the process of glacial isostasy (Jamieson, ; De Geer, /90); in former glaciated areas (e.g., Fennoscandia, Scotland, northern North America, Patagonia), land rose when the load of.

The postglacial uplift of Fennoscandia is found to be associated with intensive neotectonism: faulting, fracturing and seismicity.

INTRODUCTION The Fennoscandian shield is an old craton composed of different Precam- brian "plates" and. The contributors concentrate on topics which are characteristic of the region, scientifically sound, and not necessarily familiar to an international audience, such as land uplift, large drumlin fields and eskers, mires, snow, the timberline, fjords, archipelagos, lakes, scattered frost features, and the biodiversity of.

A brief physical analysis of the postglacial uplift of Fennoscandia is presented. It permits one to detect the great decrease in viscosity in a relatively thin layer of the upper mantle substance.

The existence of this layer, i. the asthenosphere, has been theoretically predicted by many authors on the basis of the fundamental principals of. Abstract. Postglacial land uplift is a complex process related to the continental ice retreat that took place about 10 years ago and thus started the viscoelastic response of the Earth's crust to rebound back to its equilibrium state.

To empirically model the land uplift process based on past behaviour of shoreline displacement, data points of known spatial location, elevation and dating.

Numerical values of parameters (1)-(3) are estimated by calculating the past land uplift and present land-uplift rate observed in central Sweden (glaciation centre) and the past land uplift and past land tilt observed in southern Finland (glaciation margin).

The physical geography of Fennoscandia. [Matti Seppälä;] Major landforms and bedrock / Karna Lidmar-Bergström and Jens-Ove Näslund --Land uplift: 'This book is highly recommended.' * Progress in Physical Geography 30 (2), * User-contributed reviews.

Abstract. Postglacial land uplift is a complex process related to the continental ice retreat that took place about 10  years ago and. Book review Book review Kalliola, Risto GeoJournal () – DOI /s Seppa¨ la¨, Matti (ed.), The physical geography of Fenno- according to diverse topics.

Each chapter makes an effort scandia. Oxford regional environments, Oxford Univer- to gather together and synthesize results from numerous sity Press,pp. Fennoscandia is composed of Finland ('Fennia' in Latin) and the Scandinavian peninsula (Norway and Sweden).

This fifth volume in the "Oxford Regional Environments" series presents the physical geographical factors which affect and control life in this northern area. Mehdi S. Shafiei Joud, Lars E. Sjöberg, Mohammad Bagherbandi, Use of GRACE data to detect the present land uplift rate in Fennoscandia, Geophysical Journal International, /gji/ggx,2, (), ().

Historical human influence on forest composition and structure in boreal Fennoscandia. Torbjörn Josefsson, a Björn Gunnarson, a b Lars Liedgren, c Ingela Bergman, c Lars Östlund a. a Swedish University of Agricultural Sciences, Department of Forest. Fennoscandia timeline The logical approach to unravel the mystery of the Fennoscandian history is to look at it rationally, in a sequence of events in the history of the Fennoscandia with a timeline, the gradual process how and where the peoples traveled, settled left rock art and cave paintings and other antiquities and at some places later.

Recent land uplift in Fennoscandia has been studied for a long time. A systematic collection of measurements started by the end of the 19th century: first, mareograph records and geodetic levellings have remained as conventional tools to study land uplift.

Second, the GPS technique has been widely used in land uplift determination from   The technique is applied to Fennoscandia using 25 tide gauges and T/P altimetry over the Baltic Sea. The estimated absolute vertical motions have an uncertainty of mm/yr (1σ), which is significantly smaller than the traditional approach at 1–2 mm/yr [e.g., Nerem and Mitchum, ].

The improved accuracy is primarily due to a novel. ing the rate of post-glacial land-uplift in the area onto the contour lines of a base map and using the results of palynological analyses to make an educated guess about the past vegetation. The results of these various lines of investigation were crystallized into.

We now know the ice load was not applied for longer than ~20, years. If the load cycle is taken into account, substantial uplift in Fennoscandia is not indicated.

Furthermore, detailed studies of gravity in Fennoscandia show that the anomalies correlate with lithological variations and not the present uplift (Honkasalo,). To date, care for our planet is mainly focused on the remediation of climate change induced by the huge amount of anthropogenic emissions of greenhouse gasses and its precursors.

Transforming fossil combustion to more sustainable energy worldwide is a wellknown example. In contrast, what is little known is that the environment shaped by humans is also challenged by relatively fast geological. Its name comes from the Latin words Fennia (Finland) and Scandia (Scandinavian).

The term was first used by the Finnish geologist Wilhelm Ramsay in Geologically, the area is distinct because its bedrock is Archean granite and gneiss with very little limestone, in contrast to adjacent areas in Europe. The similar term Fenno-Scandinavia is sometimes used as a synonym for Fennoscandia.

The highest rate of present uplift in Fennoscandia, mm/year, is found in the north-western part of the Kvarken area. The average uplift rate in the nominated area is mm/year.

The uplift rate decreases southwards. The main dynamic trend involves the successions from wet to. The Moho depth and the apparent land uplift maps are not reproduced in this paper. The interested reader is referred to original sources: see, e.g., Kakkuri () for the Fennoscandian land uplift map, Luosto () for recent Moho depth models.

[FIGURE 1 OMITTED] Inside the study region a small test area was selected--Estonia (Fig. Lake and mire isolation data set for the estimation of post-glacial land uplift in Fennoscandia Pohjola, J., Turunen, J.

& Lipping, T.,In: Earth System Science Data. 12, 2, p. 5 p. Research output: Contribution to journal › Article › Scientific › peer-review. The estimated center of the uplift for the observed rates (λ o = °, ϕ o = °) is several degrees east of the center of uplift for the model rates.

(The observed location of maximum of uplift is closer to that based on apparent sea level rates [Ekman, ].) The values of the observed and model maximum uplift rates are nearly the. Fennoscandian uplift illustrates the main history of Earth sciences because the results obtained had (and still have) immediate impact of the interpretation of a large number of fundamental problems in Earth sciences.

Thanks to a paper of De Geer inthe glacial isostatic origin was established. Fennoscandia became the classic. We need even bigger dikes and waterworks (not even mentioning the global sea level rise of 3 mm/yr). This sinking of land is a by-product of the uplift of land in Fennoscandia.

Mantle material is needed to fill the void that is created due to the uplift. This material is gathered from the areas around the uplift. Fennoscandia, also referred to as Fenno-Scandinavia, is a geographical cape located in the North Atlantic and Northern Europe commonly referred to as the Nordic region.

The Nordic area is made up of the Kola Peninsula, Karelia, Finland, and the Scandinavian Peninsula. Fennoscandia encompasses Sweden, Murmansk Oblast, and a large part of Karelia.The land uplift rate within the demilitarized zone amounts to between and mm/year, the lowest figure in the south-east and the highest in the north-west.

8 During the 20th century, however, sea level has risen by approximately mm/year due to the milder climate, reducing the land uplift rate relative to the sea level to between

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