Department
of Earth Science |
Northeastern
Illinois University
INTRODUCTION TO EARTH SCIENCE
ESCI 121
Section 06
Fall 2008
Department
of Earth Science |Northeastern
Illinois University
Daily Objectives #25 (November 18, 2008)
Dr. Sanders
By the end of today's class, you should be able to do the following:
w
Explain how to
retrieve the data you need for Thursday's homework.
TOPOGRAPHIC MAPS
w REVIEW: Maps: List the common
elements that should appear on any map, and explain how to use and/or interpret
them.
scale north arrow coordinate
system key/legend title
w REVIEW: Explain the terms
watershed, drainage basin, and divide.
w Explain how to use
latitude and longitude to locate points on a map.
w Explain what is meant
by "7.5 (or 15) minute quadrangle".
w Demonstrate how to
locate a point on a map using the Public Land Survey system (township, range,
and section).
STREAMS AND FLOODING
w Explain the terms
oxbow, meander, floodplain, and stream discharge.
w Sketch a profile
illustrating a floodplain. Explain how a floodplain would appear on a
topographic map.
w Explain the meaning of
the term return time (recurrence interval), and demonstrate how to calculate a
return interval for a particular size stream discharge.
w Explain the meaning of
the term 100-year flood.
w Use the
data at this link (an Excel file)
to practice calculating return time and probability.