Stan’s Obligatory Blog

A few weeks ago, Sue Hough sent an email out to the office to see who would be interested in a field trip to tour the San Andreas Fault in the Antelope Valley, a bit north of Los Angeles. The sights would be taken from her book, Finding Fault in California. As it turned out, there was quite a bit of interest. In the end, it was enough interest that we rented a 24-passenger bus and driver for the day so we could take the trip.

We met at the office early Wednesday morning, and then we headed out. We went past JPL, which is located right on the trace of the Sierra Madre Fault, and has a very nice, steep scarp right behind it. Our first real stop was the small fault scarp next to the McDonald’s at 1955 Glenoaks Blvd in San Fernando. This scarp was formed in the 1971 San Fernando Earthquake. I took the bike club there to see the scarp last June.

Continuing on up the freeway, we went through the 5/14 freeway interchange. This interchange fell down in the 1971 earthquake. It was rebuilt, and then fell down again in the 1994 Northridge Earthquake. Then we went up the 14 freeway, through the mountains, coming out in Palmdale. We went one exit farther up the freeway than we needed to, since that let us go through a somewhat-famous road cut on the freeway. It’s where the freeway crosses the trace of the San Andreas Fault, and in that cut, the rock layers look particularly jumbled and twisted from the motion of the fault.

Heading east out of Palmdale, we went along the northern edge of the San Gabriel Mountains. We stopped for a photo-op at a place where some people put up signs on the road to mark the trace of the fault. Makes it really easy to find, when there’s a big sign pointing it out. This site was very near where Kerry Sieh did his first trenching studies on the fault, back in the ’70s.

A little while later, the road started to climb into the mountains, still following the trace of the fault. We stopped at another road cut where the cut went right through the fault gouge. The side of the cut was basically packed sand and pulverized rock. Digging into it with our hands, there were some solid pieces of rock buried in there, but as Sue showed us, those solid pieces were actually shattered, and we could crumble them to sand in our hands. We also saw a tree there that was kind of bent at the top. There has been some research done on trees in that area that grow along the fault line. There are trees that show signs of having been broken off in past earthquakes.

In Wrightwood, we took one small side trip to look at some recent debris flows, and how the town has attempted to guide future debris flows to minimize damage to the town.

Coming down the east side of the mountain from Wrightwood, we ended up coming out by the 15 freeway in Cajon Pass. We took one more side trip to see Lost Lake, which is a small sag pond on the fault there.

This made for an interesting day of sightseeing. Have I mentioned lately that I really like my job?

Last year’s government shutdown involved a good bit of hiking in the local mountains. Since there was no furlough-cation this year, we had to take a weekend day to go climb Mt Baldy. We wanted to do it before November, since it’s going to get cold up there, and there could be snow. So today was the last available day in October.

Like last year, I went with Karina from my office. We went up to Manker Flat to the trailhead. On the way up there, I collected a new animal crossing sign for my collection. When we started up the trail, we got a nice view of San Antonio Falls. Even with the drought, there was still a little bit of water going over the falls. Just hearing running water is such a novelty for us these days. We also heard a woodpecker, and we were lucky enough to see it going at the trunk of a dead tree.

Because it was Saturday instead of a weekday, there were a lot of people on the trail. That was all right. It was just strange, since last year’s hikes left me with the impression that all these trails are deserted. There was a small crowd at the hut about halfway up the mountain. And a very friendly Golden Retriever named Butter, who begged snacks from everyone there.

Leaving the hut, we walked across the bowl to the place where the trail climbs steeply up the ridge to the south of the summit. In the bowl, there is a big field of boulders, and it’s pretty obvious that they all fell from the crags at the top of the ridge. I couldn’t help but wonder what that must have sounded like.

The last part of the climb to the summit was hard. Just as hard as it was last year. But we made it, and we settled in for lunch on top of the mountain. Just us and about fifty other people. At least with that many people up there, there were lots of people for the bees to bother, so they didn’t bother us so much as when we were the only ones there.

On the way down, I stopped to take a picture of the waning crescent moon hanging just over the rocks below the summit. And I also got some pictures along the trail. I’ve decided that there are parts of the Devil’s Backbone trail that really give me the willies. But that’s all right. We made it down just fine. At the ski area, they were getting ready for ski season. There were some crews practicing rescuing people from the chair lift, and there were CPR dummies spread out on a blanket nearby. We went in the restaurant so I could refill my water bottle. And we got a picture, looking back up at the summit. Then we started down the service road back to Manker Flat.

Like last year, the service road seemed to go on forever. It’s long. But I was expecting that this time, so it was all right. And we made it back to the car just fine. According to my little GPS thingy, it was 4 1/4 miles from the start to the top, and it was 10.9 miles for the whole loop. Good fun.

Last year, I finally got to do the hike to “The Bridge to Nowhere”. And today I got to do it again. The main difference this time is that it was a Saturday, rather than a Friday, and there was no government shutdown in effect. Last year when we did this, the place was deserted. We saw just a handful of people on the trail. But today, when we got to the trailhead, we had to park about a quarter-mile back down the road, since the little parking lot was completely full.

I’d gone up there with my hiking friend Kathy, and we were going to meet up with my stair-climbing friend Crystal and her boyfriend Barry. When I saw all the cars there, I thought it was going to be hard to find them. But when we parked, it turned out they were in the car right in front of us. That was convenient.

We started out down the trail. The first time, I didn’t really know what to expect, so it was easier this time. I knew the basic pattern for following and finding the trail, and we made good time. It only took us a little over two hours to make it to the Bridge. When we got there, the bungee-jumping people were out in force. It was a far cry from the deserted bridge I remember from last year. We crossed, and then followed the trail down into the gorge below the bridge so we could watch the bungee jumpers. Here’s a sample:

We had lunch down there in the gorge, and then we headed back. The hike back went pretty fast. It was a perfect day, and all around, it was a fun time.

Tonight’s adventure was a trip up Mt. Wilson with the Obscura Society for an evening of looking at the stars with the 60-inch telescope. We headed up to the top of the mountain, where we were met by our guide, Shelley Bonus. She led us in to the telescope and told us the history of it while we were waiting for nightfall. And once it was fully dark, we were able to get started. And since Matt from the Obscura Society had suggested bringing baked goods along for the evening, I brought a batch of my blue-ribbon-winning chocolate cookies. They disappeared fast, so I guess that’s a good sign.

Shelley explained that the telescope has its strong and weak points. It’s great for observing stars and small star clusters. Because it has such a long focal length, it is best run at what would be considered impossible magnifications for a small amateur telescope. There was one night back in 1997 when the air was very still and I was able to run my 8-inch Celestron up to 300X. But normally, about 100X is as far as I can go. But with the 60-inch, we were routinely running close to 400X, and the image in the eyepiece was rock-solid and clear.

We started out with Epsilon Lyrae. Splitting the two double stars is a test of the resolving power of any telescope, and the big telescope did it easily. And while we were in the neighborhood, we had a look at M57, The Ring Nebula. This is another thing I’ve looked at with my telescope, but it was much bigger and more detailed here. We also had a look at the Dumbbell Nebula, but it wasn’t such a great sight. It’s a relatively large object, so it didn’t fit well into the field of view a high magnification.

We looked at a couple of globular clusters, which were very nice. They actually looked like balls of stars, rather than the round patches of fuzz they look like in smaller telescopes. And we ended the evening with a look at Neptune. It was nice and big and blue, and its moon Triton was clearly visible. Triton has a visual magnitude of about 13, which is beyond the reach of my little 8-inch telescope, but it was obvious here.

All in all, it was a good evening of nerdy fun.

Addendum: I didn’t make the connection until the next day, but I knew Shelley before. Back in 1990, I took a class at UCLA Extension called “How to Perform Stand-Up Comedy”, and she was the instructor. But because it had been so long, and being in a completely different context, I didn’t put it all together at the time. But in any event, it was a very weird coincidence.

Mt Lukens is the highest point within the city limits of Los Angeles, and as such, it’s home to a lot of communications equipment for the Department of Water and Power, and other things like that. Since the seismic network uses some of the DWP network, we have a microwave link up there from the Seismo Lab. So I was curious to see it. I read a post on a hiking blog about climbing this mountain, and it sounded like a fun hike.

Karina is training for the New York Marathon, so she was busy going running, so Kathy and I did the hike. We started out from Deukmejian Wilderness Park in Glendale. The trail started out up the wash in the park, but quickly turned right and went up a steep ridge. The first couple miles were very steep, and pretty soon we were above the clouds. It was kind of gray and overcast down below, but it was a perfect day up on the mountain.

At the top of the ridge, the trail turned into a fire road for a bit along the top of the ridge before we met up with the Mt Lukens road. From there, it was an easy mile or so up the road to the top. At the top, we spent a few minutes looking at the view. To the south, it was just clouds, with some other mountains poking up through them, and to the north it was clear.

Going down, we took the Rim of the Valley trail, which came down a different ridge a bit west of the ridge we’d hiked up. The only really tricky part of the trip down was finding the turnoff, since the main trail goes down to Haines Canyon, and we needed to take the cutoff trail to get back to Deukmejian Park. The saving grace of the southern California mountains is that there are basically no trees, so it’s easy to see the different trails and where they go. So we turned off and headed down toward the park.

At one point, the trail went down into a canyon where there was actually a small stream. It was just a trickle, but it was actual running water. And there were big trees growing at the bottom of the canyon. From there, we had to climb up and out to get over the next ridge, and then we could see where we’d started. The last part of the route was an easy walk back down Dunsmore Canyon to where we started. In the end, it was nearly 10 miles in all, but it was a nice day, so it was a good time.

Here’s the route map: http://www.1134.org/routemap.php?xmlfile=mtlukenshike

On Sunday afternoon, we took a trip to Santa Monica to go to a talk and book-signing with Randall Munroe of XKCD. He has a new book out: What If?: Serious Scientific Answers to Absurd Hypothetical Questions. It’s a collection of his what if? columns, and it’s all very entertaining.

The basic format was a conversation between Randall and Wil Wheaton. They talked about the book, about science in general, told stories, and took questions from the audience. It was a fun time, and at the end, we all lined up to get our books signed by Randall. And I got to thank him for the little bit of geek fame I got from when he mentioned my Pet Project in the mouseover text for this cartoon: http://xkcd.com/723/

Today’s bike club ride was our old route out to Glendora. But there was a twist. The Obscura Society had arranged for a tour of Rubel’s Castle. We’ve been by there many times before, but we never had the chance to go inside. So today was the day. And in the end, I was the only one who bought a ticket to take the tour, but Kathleen drove out and met us there, and the two of us went on the tour. Everyone else just went to Classic Coffee and rode home.

Our guide for the tour was from the Glendora Historical Society, which inherited the castle from Michael Rubel when he died in 2007. We started out at the front gate and the entrance courtyard. There was a small barn and a couple of horses there. And chickens. Several chickens just running around the grounds.

The first major stop was the cemetery. Our guide said that nobody was actually buried there, but Michael just thought that a castle should have a cemetery on the grounds. He got the rejects from a local headstone maker, and later on, had some made for himself and other friends who were important in the story of the castle.

At the back of the property, there were some smaller buildings. They had garage space underneath where they had a variety of old cars, tractors, and so forth. Above were apartments, and our guide said that something like seven people live there full-time, and they help with the upkeep.

There was a barbecue pit back there, and a bird bath. The bird bath was run by an enormous engine inside a shed. There was a whole story of how they got the engine and moved it there. The story involved a truck, some dynamite, and gouging the new pavement on Route 66 on the way back to the castle. It was a pretty funny story.

Back outside, we walked under the big water tower next to the windmill that pumped water up from the well to fill it. Then we took a turn through the caboose. There was a lot of train memorabilia all around the grounds, but the caboose was the single biggest piece of it. And then it was time to go into the castle itself.

The castle is built on what remains of a giant concrete reservoir that used to store water for the citrus orchards. In the middle of the castle courtyard, there is a small house that Michael build out of rocks, bottles, and cement. He lived there for many years while building the rest of the castle around it. It was amazing to see just how much went into building the castle. There were weird objects embedded in the walls, and the walls themselves are something like six feet thick, so there are more weird objects embedded inside them that we can’t see. It’s just incredible to see such a monumental structure built out of junk. Just look at the stairs. They are made out of broken pieces of stone that they just scrounged from somewhere or other.

The clock in the big tower struck eleven while we were there. We got to look inside the tower and see the big clock mechanism working. Then we walked around and into the machine shop building that is in the center of the castle courtyard.

The last stop on the tour was the Tin Palace, where Michael’s mother held her big parties. There were more trains in there, and some memorabilia about Sally Rand, since she was one of the famous people who came to the parties there. That room also had the stained-glass painting depicting the story of bring the big engine to the castle.

The castle is a monument to Michael Rubel’s personal obsession, and it’s truly one of a kind. So it was a real treat to finally get to see inside after all these years. And on top of all that, I had a nice bike ride out there and back.

38 miles.

Being in the earthquake business, I wanted to do a little bit of sightseeing on Saturday morning before we had to head for home. The 1906 San Francisco Earthquake was the one that started everything in motion that led to the modern-day US Geological Survey Earthquake Hazards Program, so it was an event of great significance to all of us.

There are a lot of stories from that earthquake, but the story of the Golden Fire Hydrant was one I always liked. The city was in flames, the water mains were all broken, but somehow one hydrant had water and saved part of the city. And every April 18th, they have a little street party and give it a fresh coat of gold paint. So I had to go see it.

It was easy to get to. I just got on the outbound J-Church light rail line and got off at the 20th Street stop. The fire hydrant was right across the street.

I took a few pictures, and I also looked around the park a little bit. While I was waiting for the train back, another guy at the station told me the story of the park. Apparently, it had been a Jewish cemetery originally, but when San Francisco decided to move all its cemeteries to Colma, the community there agreed to the move on the condition that nothing be built on the site of their former cemetery. So the neighborhood got a nice little park out of the deal.

And that was the last real bit of sightseeing for our trip. It was a fun week.

One of my hobbies is collecting memorabilia from the Cold War, and visiting sites related to it. I’ve been to see the Titan Missile Museum in Arizona, and took a bike ride up in the San Gabriel Mountains to visit the remains of a Nike missile site there. Since we were in San Francisco, I wanted to visit Golden Gate National Recreation Area, since I’d read that an old Nike missile site there had been restored and turned into a museum.

The Nike missiles were intended to shoot down Russian bombers. The first iteration was the Nike Ajax, which was a slim missile with a conventional warhead. It was intended to shoot down bombers that flew higher and faster than regular anti-aircraft guns could hit. Later, as bombers got faster in the late 1950s, these were replaced with the Nike Hercules, which could fly higher and faster, and could carry a nuclear warhead.

The tour started in the little building where they had a disassembled missile for us to look at. We got to see where the solid-fuel rocket motor was installed, and where the nuclear warhead was mounted. Then we went outside to see the radars and the little building where the controlled the missile. In the days when the site was operational, those were located a couple miles away from the launch pads. Something to do with how the radars tracked the missile for guidance meant that they couldn’t do it well if the radar was right next to the launcher. Of course, when we were in the control trailer, everyone wanted to get a picture with the big red button marked “FIRE”.

The next stop was the building where they assembled the missiles. They had both an Ajax and a Hercules missile on display in there. And then we headed underground to the actual missile magazine. Each site had two magazines, each with six missiles in it. The showed us how the missiles were mounted on rails, and they were really pretty easy to move. In the center, there was a big elevator that could lift one missile up to the launcher above, which they demonstrated for us:

After they raised the missile up, we all came back outside, and they showed us how the launcher would raise the missile up to its launch angle, which was something like 85 degrees. Not quite vertical, since they didn’t want the first-stage booster rocket to fall back down on the launch site.

This was a fun and interesting little bit of Cold War history.

On Wednesday morning, we headed back up the coast. The plan was to stop and see the elephant seal colony at Piedras Blancas, and then continue on up to Monterey. We left Moonstone Beach and headed north. When we were close to the visitor center at Hearst Castle, we saw some zebras running on the hills next to the road. The tour guides at the castle had said that there were still some feral zebras on the ranch there, descended from the ones that were in the Hearst private zoo. Then, a few miles north of the castle, we saw the sign for the elephant seals. There were quite a few of them lounging on the beach. The volunteer from Friends of the Elephant Seal told us that most of the seals there were males, and that the females were out at sea feeding at the time. There were several pairs of males out in the waves, jousting with each other. She said they do that when they’re young as practice for later on, when it becomes a serious business for mating.

Here’s a short video clip of a pair of seals jousting:

After the seals, we continued north, through Big Sur, where we saw a new type of animal crossing sign that I can add to my collection.