By Dr. Lars Håkanson (auth.)

ISBN-10: 3540104801

ISBN-13: 9783540104803

ISBN-10: 3642815634

ISBN-13: 9783642815638

Show description

Read or Download A Manual of Lake Morphometry PDF

Best geology books

Read e-book online Plate Tectonics: Continental Drift and Mountain Building PDF

How are mountains shaped? Why are there young and old mountains? Why do the shapes of South the USA and Africa healthy so good jointly? Why is the Pacific surrounded by way of a hoop of volcanoes and earthquake services components whereas the perimeters of the Atlantic are relatively peaceable? Frisch and Meschede and Blakey resolution a lot of these questions and extra in the course of the presentation and rationalization of the geo-dynamic approaches upon which the speculation of continental flow is predicated and that have result in the concept that of plate tectonics.

Download e-book for iPad: Biogeography and plate tectonics by J. C. Briggs

One must examine just a small component of the big literature on plate tectonics released within the final 15 years to achieve that there are numerous transformations among a number of the reconstructions which have been awarded. It turns into visible that, even if there's a normal contract concerning the presence of an meeting of continents (a Pangaea) within the early Mesozoic, there's enormous confrontation between earth scientists as to the configurement of the meeting and the way and timing of the following dispersal.

Download e-book for iPad: Earth Mobiles, as Explained by Professor Xargle: 2 by Jeanne Willis

Professor Xargle, the infamous alien who's discovered within the methods of the planet Earth, discusses the stinkfumers that crowd the highways, the featherless silver flyingbird, and different fine details of Earth go back and forth.

Get Sediments, morphology, and sedimentary processes on PDF

Pt. 1. Sediments and morphology in shelf and coastal platforms -- pt. 2. Sediment delivery procedures, sedimentation and modelling -- pt. three. software and administration

Additional resources for A Manual of Lake Morphometry

Example text

The I-value may be estimated by the L+-value, equation (17). To obtain comparable R-values for different lakes it is necessary to utilize a constant number of contour lines (n). The rule of thumb is that n should be equal to 5. The lake bottom roughness (R) should not be used as a measure to compare the degree of bottom irregularity of various sub-basins in a lake. If this is required, then the form roughness (Rf ) is a preferable measure. The lake bottom roughness may also be determined directly from the echograms accordingly (Galvenius, 1975): (27) I where R lx' ly = the lake bottom roughness; = the total length of the actual bottom profile along the x-direction and y-direction, respectively (in km); s x' s y = the total straight-line length of the echosounded tracks in the x- and y-directions (in km).

G. Gilbert, 1975 and Sturm, 1975), (Table 12). Fig. 30 illustrates the relationship between the slope (ap)' determined from echo grams, and the physical status of the surficial sediments (0 - 1 em), as this is represented by the water content OWO- l )' within a test area in central Lake Vanern. The position of this test area is such that one would expect uniform sedimentological conditions (accumulation area). The major factor controlling the physical sediment character within this area is the slope.

30 LAKE VANERN o 5 10 , 15 20 t 25 k m Fig. 17. The areal distribution of the effective fetch (L f ) in Lake Vanern Maximum effectjve width (B in km); defined by the straight line on the lake ----------------------e surface,perpendicular to the maximum effective length (Le) , which connects the two most distant points on the shoreline. Thus, Be may not cross land or islands. B = 57 km in Lake Vanern (Fig. 13). c ~ ,; 2 3 4567810 4 20 3040 8 12 16 20 24 Water depth (m) Effective fetch (km) Fig. 18.

Download PDF sample

A Manual of Lake Morphometry by Dr. Lars Håkanson (auth.)


by Robert
4.2

Rated 4.46 of 5 – based on 48 votes