Tuesday, 3 April 2012
HISTORY ON COLLAROY BEACH (point A)
http://gse.mq.edu.au/docs/gse811/CaseStudy_CNCoastlineHazardLines.pdf
- Long history of storm damage and coastal erosion
- Most highly capitalised beachfront on NSW
- Nationally- 3rd area most at risk from coastal processes
- Storms that caused considerable damage 1920's, 40's 60's 70's
- The problemstemsfromthe fact thattheinitial sub-division wastooclosetothe beachwith propertiesextendingintothe active beach zone.” (Nielsen Lord Associ ates,1988).
- Early actions to minimise property damage
http://gse.mq.edu.au/docs/gse811/CaseStudy_CNCoastlineHazardLines.pdf
- Long history of storm damage and coastal erosion
- Most highly capitalised beachfront on NSW
- Nationally- 3rd area most at risk from coastal processes
- Storms that caused considerable damage 1920's, 40's 60's 70's
- The problemstemsfromthe fact thattheinitial sub-division wastooclosetothe beachwith propertiesextendingintothe active beach zone.” (Nielsen Lord Associ ates,1988).
- Early actions to minimise property damage
• Building lines were established follow ing
severe storms in 1967 and 1974:
- 15m setback north of Goodwin St
- 23m setback south of Goodw in St to Jenkins St
- Collaroy/Narrabeen Coastline Management Plan (1997)
- 15m setback north of Goodwin St
- 23m setback south of Goodw in St to Jenkins St
- Collaroy/Narrabeen Coastline Management Plan (1997)
Adopted in 1997
Identif ies management strategies f or dealing with coastal erosion along the beach.
Identif ies management strategies f or dealing with coastal erosion along the beach.
Management Strategies include:
- Undertake protective
-
Environmental planning measures
-
Development control and conditionsDune management
works
Monday, 2 April 2012
|
|
Water Point A
|
Water Point B
|
Soil Point A
|
Soil Point B
|
|
pH
|
8.1
|
7.8
|
6.8
|
7.0
|
|
Salt (digital)
|
20 000 ppm
|
20 000 ppm
|
1600ppm
|
1190ppm
|
|
Salt (Silver Nitrate) Visual
|
Real White
|
Same just a tiny bit
less
|
Not to cloudy
|
Not to cloudy
|
|
MOISTURE SOIL ONLY
(OVEN)
|
N/A
|
N/A
|
Before – 45.22g
After – 43.85g
= 1.37g
|
Before – 54.50g
After – 53.00g
= 1.50g
|
|
Turbidity (Water)
|
0.00
|
5.9
|
N/A
|
N/A
|
|
Phosphate
(water)
|
25
|
25-50 (real close to
25)
|
N/A
|
N/A
|
|
Texture & Colour (Soil)
|
N/A
|
N/A
|
Real lumpy, and cloggy
|
Same
as before just a bit more softer
|
|
Possible Parent Rock(s) (soil)
|
N/A
|
N/A
|
Sandstone
|
Sandstone
|
|
Pollution (water)
|
None- although sea
weed
|
A lot of sea weed, and
pollution (rubbish, and old clothing materials)
|
N/A
|
N/A
|
Sunday, 1 April 2012
RESULTS
DAY 1
DAY 1
|
|
Water Point A
|
Water Point B
|
Soil Point A
|
Soil Point B
|
|
pH
|
8.3
|
8.1
|
6.7
|
6.9
|
|
Salt (digital)
|
20 000 ppm
|
20 000 ppm
|
1680 ppm
|
1205 ppm
|
|
Salt (Silver Nitrate) Visual
|
Real White Cloudy
|
Still Really White but
not as much
|
More Cloudier then B,
Cloudy but not incredibly white.
|
Less Cloudier then A
|
|
MOISTURE SOIL ONLY
(OVEN)
|
|
|
Before – 52.40g
After – 50.70g
= 1.7
|
Before – 55.70g
After- 54.25g
= 1.45g
|
|
Turbidity (Water)
|
0.00
|
5.05
|
N/A
|
N/A
|
|
Phosphate
(water)
|
25
|
10 – 25 (closer to 10)
|
N/A
|
N/A
|
|
Texture & Colour (Soil)
|
|
|
Grey black (more black) thin and Hard
|
<
<
<
|
|
Possible Parent Rock(s) (soil)
|
|
|
Sandstone
|
<
<
<
|
|
Pollution (water)
|
Sea weed no pollution
|
A lot of sea weed no
pollution
|
N/A
|
N/A
|
Tuesday, 27 March 2012
Yesterday (27/3/12) I went and got my second set of samples.
Point A's water was pretty similar in condition to the first time, a bit of sea weed, no pollution, but the only real difference was that it was low tide.
Point A's soil was a lot different to what condition it was before. The soil was very clay like, thick, compared to last time when it was not clay like at all and it was very easy to dig up.
Point B's water was similar to last time very sea weedy, although this time there seemed to be a little bit more sea weed but there was a big difference. POLLUTION- there was pollution all along the shore line (rubbish, wrappers, string, and even a back piece of a bikini top that was very eroded).
Point B's Soil had basically no difference at all.
WHY WAS IT DIFFERENT AND IT'S EFFECT ON RESULTS
Point A's soil- IM guessing dure to the rain and then activity on it straight after, which can effect the results majorly.
Point B's water- Pollution has obviously came through recently which also means that the water could have been polluted aswell, I guess I will just have to way until I do my testing.
Point A's water was pretty similar in condition to the first time, a bit of sea weed, no pollution, but the only real difference was that it was low tide.
Point A's soil was a lot different to what condition it was before. The soil was very clay like, thick, compared to last time when it was not clay like at all and it was very easy to dig up.
Point B's water was similar to last time very sea weedy, although this time there seemed to be a little bit more sea weed but there was a big difference. POLLUTION- there was pollution all along the shore line (rubbish, wrappers, string, and even a back piece of a bikini top that was very eroded).
Point B's Soil had basically no difference at all.
WHY WAS IT DIFFERENT AND IT'S EFFECT ON RESULTS
Point A's soil- IM guessing dure to the rain and then activity on it straight after, which can effect the results majorly.
Point B's water- Pollution has obviously came through recently which also means that the water could have been polluted aswell, I guess I will just have to way until I do my testing.
Saturday, 24 March 2012
After taking my first of two samples there are factors that I have to take into consideration.
Firstly it had been raining for a couple of days prior to me taking the samples.
Secondly at point A in the park the soil was very hard, harder then normal. Point B's soil wasn't as hard but still harder then normal.
Thirdly at Point B in the ocean there was a lot of sea weed present in the water and on the shore line, although point A had a bit swell but no where as much as point B.
In my next time when sampling hopefully the conditions will be different so that we could compare, so I will purposely try and sample on a day when those conditions are different from the first time.
Firstly it had been raining for a couple of days prior to me taking the samples.
Secondly at point A in the park the soil was very hard, harder then normal. Point B's soil wasn't as hard but still harder then normal.
Thirdly at Point B in the ocean there was a lot of sea weed present in the water and on the shore line, although point A had a bit swell but no where as much as point B.
In my next time when sampling hopefully the conditions will be different so that we could compare, so I will purposely try and sample on a day when those conditions are different from the first time.
Sunday, 18 March 2012
OVERVIEW
For my open ended investigation, the area that I will be testing is Collaroy beach and Collaroy Basin. I will be taking 4 samples all up, and it will be broken up into 2 days.
1st Day
- Point A, Water sample and Soil sample
- Point B, Water sample and Soil sample
2nd Day
REPEAT DAY 1
From these samples I will be testing the following.
- SOIL SAMPLE
- Moisture content
- pH
- Presence of Salt
- Texture and Colour
- Possible parent rock(s)
-WATER SAMPLE
- Turbidity
- pH
- Presence of Salt
- Presence of Phosphates
- Evidence of Pollution
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