My last post was a bit old, but I thought I'd post it anyways. Today we did 4 grids, then ended early to talk about School day this Sunday. Like I said, I'm going to be helping explain GPR. So I'll practice by explaining it here!
GPR stands for Ground Penetrating RADAR (Radio Detection and Ranging). The Box which we pull along the ground contains an antenna, which emits radio waves into the ground. These waves are then reflected back to a receptor antenna, and the computer measures the time it took for the radar pulses to return. Because the velocity at which the radar waves travel differs depending on the material it travels through, we can see where the radio waves have traveled through and reflected off of differing material beneath the ground. This includes objects such as rocks, or differing soil types, so we see a lot of things which are just natural parts of the landscape. However, this also means we can see where rocks are lined up as a wall, or as the foundation of a structure. Even differences in soil types can be helpful to Archaeologists, because human occupation causes change in the soil composition.
Because we are recording radio waves, there can be a lot of interference from other radio waves traveling through the area. When the antenna picks up radio signals from other sources, it creates "noise" which clouds and confuses our data. To help prevent this, we turn off our cell phones while collecting data. Even with these precautions, noise from plains overhead, electrical wires etc. can be picked up in our data, and must be processed out later.
Well, that's an overview anyways! It will be a good experience to tech the kids, and we'll have some of them pull the GPR just for fun. We only have 20 minutes, so it will have to be brief and clear!
Tomorrow is our last day of work before the weekend, and I am heading back to Jerusalem to visit a few friends.
It has been difficult for me to keep a good attitude, but I have been learning that the way I act, and my attitude influences others, and can either tear others down or build them up. These are things we all know, but sometimes it takes experience to see it and understand how it works. I also learned Freshman year what a difference it makes to be thankful, and recognize the good things. So, I'm trying to train my thoughts towards gratitude, and not well on any discontentment. It makes a difference, for me and for others :)
GPR stands for Ground Penetrating RADAR (Radio Detection and Ranging). The Box which we pull along the ground contains an antenna, which emits radio waves into the ground. These waves are then reflected back to a receptor antenna, and the computer measures the time it took for the radar pulses to return. Because the velocity at which the radar waves travel differs depending on the material it travels through, we can see where the radio waves have traveled through and reflected off of differing material beneath the ground. This includes objects such as rocks, or differing soil types, so we see a lot of things which are just natural parts of the landscape. However, this also means we can see where rocks are lined up as a wall, or as the foundation of a structure. Even differences in soil types can be helpful to Archaeologists, because human occupation causes change in the soil composition.
Because we are recording radio waves, there can be a lot of interference from other radio waves traveling through the area. When the antenna picks up radio signals from other sources, it creates "noise" which clouds and confuses our data. To help prevent this, we turn off our cell phones while collecting data. Even with these precautions, noise from plains overhead, electrical wires etc. can be picked up in our data, and must be processed out later.
Well, that's an overview anyways! It will be a good experience to tech the kids, and we'll have some of them pull the GPR just for fun. We only have 20 minutes, so it will have to be brief and clear!
Tomorrow is our last day of work before the weekend, and I am heading back to Jerusalem to visit a few friends.
It has been difficult for me to keep a good attitude, but I have been learning that the way I act, and my attitude influences others, and can either tear others down or build them up. These are things we all know, but sometimes it takes experience to see it and understand how it works. I also learned Freshman year what a difference it makes to be thankful, and recognize the good things. So, I'm trying to train my thoughts towards gratitude, and not well on any discontentment. It makes a difference, for me and for others :)
 |
| My team after we finished 2 of the hardest grids in the hottest shift of the day! Victory! |
 |
| At the tell this morning |
 |
| These goats come through every day, the kids are so cute! |
Comments
Post a Comment