Changeset 3405

Timestamp:

Jul 23, 2006, 12:05:12 PM (18 years ago)

Author:

sexton

Message:

minor changes - last change before taking to Perth

File:

• production/onslow_2006/report/interpretation.tex (modified) (3 diffs)

production/onslow_2006/report/interpretation.tex

@@ -19 +19 @@
 the initial water level will be that of the tidal scenario. In the 
 case of MSL, this water level will be 0. As the tsunami wave moves
-through this point, the water height may grow and thus the stage will represent the amplitude of the wave. For an onshore location such as the Light Tower, the actual water depth will be the difference between
+through this point, the water height may grow and thus the stage will 
+represent the amplitude of the wave. For an onshore location such as the 
+Light Tower, the actual water depth will be the difference between
 the stage and the elevation at that point. Therefore, at the beginning
 of the simulation, there will be no water onshore and therefore
@@ -49 +51 @@
 \end{table}
 
-A tsunami wave typically has a low amplitude and typically travels at 100's of kilometres per hour. The low amplitude complicates the ability to detect
-the wave. As the water depth decreases, the speed of the wave 
+A tsunami wave typically has a small amplitude and typically travels at 100's of kilometres per hour. 
+The low amplitude complicates the ability to detect
+the wave. As the water depth decreases, 
+the speed of the wave 
 decreases and the amplitude grows. Another important feature of tsunamis 
 is drawdown. This means that the water is seen to retreat from the beaches
-before a tsunami wave impacts that location. Other features 
-include reflections (where the wave is redirected due to the influence
-of the coast) and shoaling (where the wave's amplitude increases ...).
+before a tsunami wave 
+impacts that location. Other features 
+include reflections (where the wave is redirected due to the 
+influence 
+of the coast) and shoaling (where the wave's amplitude is amplified
+close to the coast due to wave interactions).
+These features are seen in these scenarios, and are consistent
+for HAT, MSL and LAT. 
+There is a small wave, followed
+by a large drawdown and then a large secondary wave. 
 
-These features are seen in these scenarios, and are consistent
-for HAT, MSL and LAT. There is a small wave, followed
-by a large drawdown and then a large secondary wave. These 
+These 
 features are illustrated in Figure \ref{fig:gaugeBeadonBayeest}
 where a small wave can be seen at around 200 mins. For the HAT
 case (shown in blue), the amplitude
-of the wave at this location is around 0.5 m\footnote{In this
+of the wave at this location is around 0.8 m\footnote{In this
 scenario, the initial water level is 1.5 m, which means that
 the actual amplitude is the difference between the stage value
-and the initial water level; 2.? - 1.5).
-The drawdown of around 4 m (i.e. 2.? - -2) then occurs at around 230 mins
+and the initial water level; 2.3 - 1.5).
+The drawdown of around 4.3 m (i.e. 2.3 - -2) then occurs at around 230 mins
 (i.e. 3.8 hours after the event has been generated), before
-the second wave arrives with an amplitude of over 3 m (i.e. 4.? -
--1.5). A further wave
-is then evident a short time later (around 270 mins) 
-which further increases the amplitude to over 4.5 m (i.e. 6.? - -1.5).
+the second wave arrives 
+with an amplitude of around 3.6 m (i.e. 4.1 - 1.5). A further wave
+is then evident a short time later (around 255 mins) 
+which further increases the amplitude to around 5 m (i.e. 6.6 - 1.5).
 These features are replicated at each of the offshore points (those
 points with negative elevation as shown in Table \ref{table:locations}).
@@ -101 +110 @@
 to Table \ref{table:speedexamples}, a person in this location could
 not outrun this water movement. A small amount of water is found
-at the hospital (? cm). Whilst this seems minimal, the water is moving 
-at around 6 m/s which could dislodge items such as trolleys and 
-wheelchairs if the water was able to enter the hospital.
+at the hospital (10 cm). Whilst this seems minimal, the water is moving 
+at around 6 m/s which could dislodge some items if the water was able to enter the hospital.
  
 The geography of the Onslow area has played a role in offering