OCEAN AND COASTAL TIDE
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
Theoretical Background
Definition
The Equilibrium Theory of Tide
Influence of Moon’s and Sun’s Position on Tide
Tides in Indonesia
01-Sep
02-Sep
03-Sep
04-Sep
05-Sep
06-Sep
07-Sep
08-Sep
09-Sep
10-Sep
11-Sep
12-Sep
13-Sep
14-Sep
15-Sep
Time
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
Tides in Indonesia
-1.00
01-Sep
02-Sep
03-Sep
04-Sep
05-Sep
06-Sep
07-Sep
08-Sep
09-Sep
10-Sep
11-Sep
12-Sep
13-Sep
14-Sep
15-Sep
Time
Tides in Indonesia
01-Sep
02-Sep
03-Sep
04-Sep
05-Sep
06-Sep
07-Sep
08-Sep
09-Sep
10-Sep
11-Sep
12-Sep
13-Sep
14-Sep
15-Sep
Time
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
Tides in Indonesia
-2.50
01-Sep
02-Sep
03-Sep
04-Sep
05-Sep
06-Sep
07-Sep
08-Sep
09-Sep
10-Sep
11-Sep
12-Sep
13-Sep
14-Sep
15-Sep
Time
General Definition on Tide
Relative movement of materials in the planets, natural
satellites, stars or other celestial bodies due to the
gravity of other celestial bodies
Three Types of Tide
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
Tide Definition in Hydrography
Variation of sea level due to the gravity force
due to mutual attraction between the earth/moon and
earth/sun systems
Importance of Tide
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
Tidal Changes
A surface resulting from the
effects of tidal forcing and earth’s rotation, which is
coincident with the tidal bulge; if there were no
other forces acting, the sea surface would take the
shape of the equilibrium tide
Tidal Forces
Earth
–
Moon System
Earth
–
Sun System
Earth
–
Moon
–
Sun System
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
Equilibrium Theory of Tide
Adopted from Newton’s Law on Gravity
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
tractive force
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
The Facts of Equilibrium Theory of Tide
In reality, equilibrium tide conditions are never present in
the real due to some facts:
Tides propagate as
shallow water waves
Earth rotation is faster than the ability of water mass
to achieve equilibrium condition
The presence of lands
The presence of Coriolis effect
Dynamical Theory of Tide
Starts to be developed ca. XVIII Century by some scientists
and mathematicians such as Bernoulli, Euler and Laplace.
The dynamical theory of tide is considering:
Coastal Shapes
Coriolis Force
Inertial Forces
Seafloor Frictions
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
tides
gd3208 coastal environmental survey
Dr. rer. nat. Wiwin Windupranata
Hydrographic Science and Engineering Working Group Faculty of Earth Science and Technology
Institute of Technology, Bandung
