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THE BASICS OF PLOTING OCEAN LOCATIONS the GPS LATITUDE & LONGITUDE. Robert Perry. DISCLAIMER: The images, maps and diagrams in this presentation were taken from the public domain on the world wide web. This slide show is for non- commercial, educational purposes ONLY !

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slide1

THE BASICS OF

PLOTING

OCEAN LOCATIONS

the GPS

LATITUDE &

LONGITUDE

Robert Perry

slide2

DISCLAIMER:

The images, maps and diagrams in

this presentation were taken from

the public domain on the world

wide web. This slide show is for non-

commercial, educational purposes

ONLY !

e-mail: [email protected]

slide3

LATITUDE & LONGITUDE LINES:

LATITUDE

Lines go east

and west.

LONGITUDE

Lines go north

and south.

Map: http://worldatlas.com/aatlas/imageg.htm

slide4

a GLOBAL POSITIONING

SATELLITE RECEIVER is

used to measure and record

the LATITUDE and

LONGITUDE of a

LOCATION in DEGREES,

and MINUTES.

slide5

LATITUDE

LONGITUDE

Minutes

latitude

34O 06.54’ N

North of

equator

Degrees

slide7

Ground Tracks for the

27 Global Positioning Satellites (effective 9/28/98)

slide8

X Y Z & T

At least 4 GPSatellites must be locked in to give

Latitude, Longitude, Elevation and GPS Time.

slide9

SAMPLE ACTIVITY:

PLOT THE POSITIONS OF A FEW

LOCATIONS ON A CHART

slide10

Materials needed for this sample activity:

Copies of Santa Monica Bay

or southern California chart

pencils

Ruler or

straight-edge

Location data

(from GPS)

slide11

STEPS TO FOLLOW IN THIS ACTIVITY:

1- FIND THE LATITUDE LINE AND

DRAW IT IN PLACE USING YOUR

PENCIL AND RULER.

2- FIND THE LONGITUDE LINE AND

DRAW IT IN PLACE USING YOUR

PENCIL AND RULER

3. PLACE AN “X” TO MARK THE

SPOT WHERE LATITUDE AND

LONGITUDE LINES CROSS.

slide16

DEPTHS ARE

SHOWN

BY DARKER

COLORS

2. LOCATION OF OCEAN AND DEPTHS.

slide18

DEGREES of

LATITUDE

GET BIGGER

GOING NORTH

3. DEGREES OF LATITUDE (horizontal lines).

slide20

DEGREES of

LONGITUDE

GET BIGGER

GOING WEST

4. DEGREES OF LONGITUDE (vertical lines).

slide21

NOTICE THAT THE GRIDLINES ON THIS CHART ARE

EQUAL TO 5’ (minutes) EACH.

slide22

SAMPLE PROBLEM #1:

LOCATE THE SANTA MONICA PIER

slide23

GIVEN: THE SANTA MONICA PIER IS LOCATED AT

34O 00.50’N and 118O 29.10’W

slide24

GIVEN: THE SANTA MONICA PIER IS LOCATED AT

34O 00.50’N and 118O 29.10’W

First, we’ll

draw the

LATITUDE

LINE

using your

ruler and a

pencil.

slide25

GIVEN: THE SANTA MONICA PIER IS LOCATED AT

34O 00.50’N and 118O 29.10’W

34O 00.50’N

(green line)

is just a tiny

bit North of

34O 00.00’N

slide26

GIVEN: THE SANTA MONICA PIER IS LOCATED AT

34O 00.50’N and 118O 29.10’W

34O 00.50’N

[our location is

someplace along

this green line]

slide27

GIVEN: THE SANTA MONICA PIER IS LOCATED AT

34O 00.50’N and 118O 29.10’W

Next, let’s

draw the

LONGITUDE

LINE

using your

ruler and a

pencil.

slide28

GIVEN: THE SANTA MONICA PIER IS LOCATED AT

34O 00.50’N and 118O 29.10’W

118O 29.10’W

(yellow line)

is just a tiny

bit before

118O 30.00’W

slide29

GIVEN: THE SANTA MONICA PIER IS LOCATED AT

34O 00.50’N and 118O 29.10’W

The Santa

Monica Pier

is located where

the two lines

cross each other.

slide30

GIVEN: THE SANTA MONICA PIER IS LOCATED AT

34O 00.50’N and 118O 29.10’W

X

“X” marks

the spot !

slide31

SAMPLE PROBLEM #2:

LOCATE THE MANHATTAN BEACH PIER

X

slide32

GIVEN: THE MANHATTAN BCH. PIER IS LOCATED AT

33O 53.00’N and 118O 24.90’W

X

slide33

GIVEN: THE MANHATTAN BCH. PIER IS LOCATED AT

33O 53.00’N and 118O 24.90’W

X

33O 53.00’ is

between 33O 50’

and 33O 55’

slide34

GIVEN: THE MANHATTAN BCH. PIER IS LOCATED AT

33O 53.00’N and 118O 24.90’W

X

slide35

GIVEN: THE MANHATTAN BCH. PIER IS LOCATED AT

33O 53.00’N and 118O 24.90’W

X

slide36

GIVEN: THE MANHATTAN BCH. PIER IS LOCATED AT

33O 53.00’N and 118O 24.90’W

X

LAT and

LON cross

here

slide37

GIVEN: THE MANHATTAN BCH. PIER IS LOCATED AT

33O 53.00’N and 118O 24.90’W

X

X

“X” marks

the spot !

slide38

SAMPLE PROBLEM #3:

LOCATE THE ZUMA BEACH, MALIBU

X

X

slide39

GIVEN: ZUMA BEACH, MALIBU IS LOCATED AT

34O 01.25’N and 118O 49.50’W

X

X

slide40

GIVEN: ZUMA BEACH, MALIBU IS LOCATED AT

34O 01.25’N and 118O 49.50’W

X

X

slide41

GIVEN: ZUMA BEACH, MALIBU IS LOCATED AT

34O 01.25’N and 118O 49.50’W

X

X

slide42

GIVEN: ZUMA BEACH, MALIBU IS LOCATED AT

34O 01.25’N and 118O 49.50’W

X

X

LAT and

LON cross

here

slide43

GIVEN: ZUMA BEACH, MALIBU IS LOCATED AT

34O 01.25’N and 118O 49.50’W

X

X

X

“X” marks

the spot !

slide44

SUMMARY:

TO PLOT A LOCATION ON A CHART

1. FIND THE LATITUDE LINE

2. FIND THE LONGITUDE LINE

3. PLACE AN “x” WHERE THE TWO

LINES CROSS

slide45

“X” marks

the spot !

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