ML163443

視聴覚メディア・ノート

Subject 1: (Interview). Subtitle: Gordon Grant, Elizabeth Arnold. Timecode In: 00:00:52. Timecode out: 00:05:58. Notes: Hydrology discussion. Subject 2: (Sound Effects). Subtitle: White Branch Falls. Timecode In: 00:06:50. Timecode out: 00:10:04. Subject 3: (Interview). Subtitle: Gordon Grant, Elizabeth Arnold. Timecode In: 00:14:57. Timecode out: 00:39:26. Notes: Hydrology discussion. Subject 4: (Interview). Subtitle: Gordon Grant, Elizabeth Arnold. Timecode In: 00:46:14. Timecode out: 00:53:51. Notes: Hydrology discussion. Subject 5: (Sound Effects). Subtitle: Row boat sounds. Timecode In: 01:04:14. Timecode out: 01:05:47. Subject 6: (Interview). Subtitle: Gordon Grant, Elizabeth Arnold. Timecode In: 01:07:37. Timecode out: 01:12:17. Notes: Hydrology discussion. Subject 7: (Interview). Subtitle: Gordon Grant, Elizabeth Arnold. Timecode In: 01:16:53. Timecode out: 01:19:53. Notes: Hydrology discussion. Subject 8: (Sound Effects). Subtitle: Haley Falls. Timecode In: 01:20:10. Timecode out: 01:22:00. Equipment Notes: Decoded MS stereo; Sonosax SXM 2 preamp. yNPR/NGS RADIO EXPEDITIONS Show: USFS 100th anniversary Engineer: Leo DelAguila Date: June 11-13, 2005 DAT #4 Gordon Grant, Research hydrologist with the USFS Pac NW research station in Corvalis Oregon Elizabeth Arnold Leo delAguila Leo-I'm just quickly testing. This is Dat #4 June 12th 05 and I'm with Elizabeth. Where are we Elizabeth? 0:13 EA- Hobbitland 0:16 GG- What's known as Lost Spring 0:20 Leo- Lost spring, good to know. Let me get close to you (0:34) 0:50 GG- so you may wonder how we do science out here? Do we just come out and commune with nature? Well there are some things we measure. A spring of this size which covers 5 or 6 acres of wetland is almost impossible to measure it's flow. We'd have to go downstream to where the flow is collected in a single channel before we can make an intelligent measurement. But one thing we can do here is measure the temperature of the water. And by putting together a continuous temperature record you get a very clear picture of, for example, how sensitive the spring is to things like rainfall events because you can see it in the temperature record. So if I can do this without falling in (moving towards water) can you hand me that stick¿ We use very sophisticated tools here, your research dollars at work. (2:16 swishing around with stick in water) 2:45 So what I'm retrieving here, this is one of our continuous temperature monitoring devices. So it lives down here, carefully camouflaged behind some moss and there's a chip in here which is every five minutes goes out and takes another temperature reading and so periodically one of my graduate students comes out and downloads it to a computer and then when we put that up on a screen we get a very clear picture of what the temperature trace has been and that tells us quite a bit about the sensitivity of the water to the atmosphere. SO we've got a number of springs all through this western slope of the cascades where we've been doing these measurements. A day with wet feet is a good day. 4:15 EA- so that just comes up on the computer and you can figure out¿ what's that called, this instrument? 4:26 GG- that's a hobo temperature probe. One of the interesting things happening is that the ability to make measurements, to go out and sense the environment, has gotten really really good lately because there are all these small digital things that you can put in a river, you can put in a rock, we have smart rocks that record their history of movement in the channel. It's like this whole new way of sensing nature. We can't be out here, we're not gonna sit out here cold, day in day out with a thermometer and make the measurement but we can now get a wonderful picture of what does happen out here and if youd o that in enough places you begin to re... (Notes truncated)