GEOLOGY 70 GOOGLE EARTH EXERCISE

Instructions: Answer the questions accordingly. Follow the directions for each part. Directly type your answer in the spaces provided. Paste the screenshots taken with Snipping Tool directly unto this document. Resize the screenshots so they fit into the table.

Save as _.docx e.g. Ybanez_MGIJ2.docx.

1. Topographic maps

Visit the NAMRIA online 1:50k map repository. Download your hometown's topographic map. Using a photo viewer, inspect the topography of the area. Answer the following:

a. What sedimentary environment/landform (volcano, river, delta, spit, beach, alluvial fan, mountain range, etc.) are in the vicinity of your hometown?

Volcano, lagoon, beach, river

b. Name them and take screen shots.

1. Volcano (Mt Timpoong)

2. Lagoon Taguines Lagoon

3. Beach generally, the beaches are named after the barangays that theyre located. Since were in an island, beaches run along most barangays (our town is mostly coastal)

Paste Screenshots here:

1. Mt Timpoong (inactive volcano)

2. Taguines Lagoon (lagoon)

3. Rivers

4. Beach

2. Google Earth

Open Google Earth and zoom in on the location of your hometown. Answer the following:

a. Take screenshots of the landforms you identified in #1 using the same zoom level.

1. Mt Timpong

2. Taguines Lagoon

3. River

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4. Beach

b. Locate your house. Add a placemark. Use a symbol for a house. List its coordinates (latitude and longitude) on the right

Latitude: 9 9'21.12"N

Longitude: 12447'19.55"E

c. Take a screenshot that shows your house and the nearest river or coast. Paste screenshot on the right

House and nearest river and coast:

d. Locate your city/town hall. Add a placemark. Use a flag for the symbol. List its coordinates (latitude and longitude) on the right

Latitude: 9 9'22.38"N

Longitude: 12447'16.48"E

e. Take a screen shot that shows your house, the town hall and the nearest river or coast. Paste screenshot on the right

Town Hall, residence, nearest river and coast

5. Hazard Maps

Access the websites below and look for hazard maps centered on your hometown. Indicate where your house is. Take note of the hazard level in your area and your distance from the active fault, volcano, river or coast. Take screen shots.

Nababaha

Distance from nearest coast: 556.29 m

Distance from nearest river: 526.24 m

Hazard level: Mostly Moderate (0.5-1.5 m) to High (1.5m

6. Bulacan Fieldwork : Pre-field Reconnaisance and Study

While the activities succeeding an accomplished fieldwork involve data-processing and report-writing, other activities can also be conducted preceding a fieldwork which will help prepare you for the fieldwork proper. One does not need to wait for the fieldwork to finish before studying related references and maps of the area.

For this activity, you will be observing and studying the field area located in Dona Remedios Trinidad, Bulacan.

Each group, as assigned last week, will traverse a given section of the Bayabas River (which flows from east to west). Starting from the drop off point, groups will have to traverse a maximum of 500 meters upstream or downstream of their given section. The groups and their assigned areas are given below:

Group Starting coordinates Details of traverse

1 14.959560 N

121.058468 E

South of the view deck along road and downstream river

2 Upstream from viewdeck

3 14.956304 N

121.072741 E

Downstream

4 Upstream

5 14.958172 N

121.081622 E

Downstream

6 Upstream

7 14.955612 N

121.091776 E

Downstream

8 Upstream

Observe the coverage area of the fieldwork. Using the ruler, placemark, and other tools, answer the following*:

* You may want to save copies of your answers here for your reports later.

a. Given your starting point, create a location map (take a screen shot) of the traverse area of your group. Make sure important elements like the river and road are visible. Zoom level must contain your entire traverse.

Group 5 Traverse

b. Given all starting points, create a general location map (screen shot) for the whole batchs fieldwork. Make sure to capture all traverse areas.

General Location Map

c. Create a cross-section of the entire field area. Use the first and last groups starting points as the endpoints of the transect line. Post the screenshot of the transect line and profile on the right.

Cross section of field area

d. Describe the topography and river morphology of the study area.

The relief of the traverse area (from Group 1 starting point to Group 8s) is approximately 22 meters, which is intermediate. Generally, the whole area is a bit hilly, wherein the elevation changes many times across the traverse. As seen in the cross section, located at the middle of the traverse are two hills (on average) with relatively steep slope. But when you inspect the entire traverse, the average slope from Group 1 to Group 8 starting points is relatively low.

The river meanders throughout the traverse, which is seen most at the middle and western-end areas. However, the degree of meandering is also relatively low.