What are Isochrones in geography?

An isochrone map in geography and urban planning is a map that depicts the area accessible from a point within a certain time threshold. An isochrone (iso = equal, chrone = time) is defined as “a line drawn on a map connecting points at which something occurs or arrives at the same time”.

What does an isochron map show?

A contour map that displays the variation in time between two seismic events or reflections. Isochron map. A contour map showing the traveltimes to one particular seismic event or reflection.

How is a map drawn?

Lines of latitude and longitude are mathematically plotted on a flat surface. Features are drawn in their appropriate location. Before the development of advanced computer and printing techniques, maps were drawn by hand.

What are Isochrones astronomy?

In stellar evolution, an isochrone is a curve on the Hertzsprung-Russell diagram, representing a population of stars of the same age but with different mass. They then evolve quickly towards their stellar endpoints: white dwarfs, neutron stars, or black holes.

What is Isochrones in soil mechanics?

An isochrone refers to a trajectory in which all properties of the trajectory are happening at the same time. In the case of consolidation we can use isochrones to show how pore pressure is changing with respect to depth and concurrent times.

What is ISO chrome lines?

What are isochrome lines? Isochrome lines are drawn on a map to join places equal in terms of the time taken to reach them.

Does seafloor spreading cause mid ocean ridges?

Seafloor spreading occurs along mid-ocean ridges—large mountain ranges rising from the ocean floor. Slowly spreading ridges are the sites of tall, narrow underwater cliffs and mountains. Rapidly spreading ridges have a much more gentle slopes. The Mid-Atlantic Ridge, for instance, is a slow spreading center.

Why do we draw maps?

Maps represent the real world on a much smaller scale. They help you travel from one location to another. They help you organize information. They help you figure out where you are and how to get where you want to go.

How do you fit Isochrones?

The traditional “fitting” method utilized is to first de- termine the reddening by adjusting a Zero Age Main Sequence (ZAMS) to the observed color-color diagram (usually (B−V) vs. (U − B) of the cluster and then, keeping this value fixed, adjust- ing the distance and age using the observed CMD and tabulated isochrones.

What is Isochrones in consolidation?

What is degree consolidation?

The ratio, expressed as a percentage, of the amount of consolidation at a given time within a soil mass, to the total amount of consolidation obtainable under a given stress condition.