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1. #ORCAFLEX COORDINATE CONVERSION X VS Y TRIAL MONITORING NETWORKS#
2. #ORCAFLEX COORDINATE CONVERSION X VS Y REGISTRATION OF A#

High-level interface by converting the low-level error codes into.

Next the physical radius of the point and the radius in the x -y plane are computedThe rates of increase of x-, y- and z-momentum per unit volume of a fluid particle. Basically, I created the county polygons using a set of longitudes/latitudes coordinates. I created a map using Google Maps API that highlights all Minnesota counties. For example, if one set of coordinate axes is labeled X, Y and Z, and the other set of coordinate axes are labeled U, V,andW, then the same vector v can be expressed in either coordinate frame as v v x1 x +v y1 y +v z1 z (C.4) v u1 u +v v1 v +v w1 w, (C.5) where the unit vectors 1 x, 1 y,and1 z are along the XYZ axes. I couldn't find any useful Google Maps API that allows me to save my custom map the way it is (if you know a way, let me know), so I figure I should just draw it with Graphics2D in Java.a tan 2 (y,x) a tan( y /x) The second form is the usual computer call for a 4 -quadrant arctangent.

These must be converted to degrees. Looking at the numbers and comparing to JPL Horizons, the best match is to the position of the Earth-Moon Barycenter in heliocentric coordinates. That's of course consistent with the data being labeled as: EMB, Ecliptic Heliocentric Coordinates.If you can live with some small uncertainties due to the details of how coordinate transforms may evolve over time, I believe you can just apply some simple trigonometry. You can confirm here.Position (AU): Velocity (AU/day): JPL Horizions Earth-Moon barycenter J2000 Heliocentric for JD 2415021.0JPL Horizions Earth J2000 Heliocentric for JD 2415021.0JPL Horizions Earth J2000 Solar System barycenter for JD 2415021. Likewise, if we have a point in Cartesian coordinates the cylindrical coordinates can be found by using the following conversions. The third equation is just an acknowledgement that the z z -coordinate of a point in Cartesian and polar coordinates is the same.

Prior to the deployment the dynamics of the system have been simulated numerically in order to find optimal materials, cables, buoys, and connections under critical marine conditions. Inductive communication through the mooring line provides an inexpensive, reliable, and flexible solution. The system consists of an underwater seismometer, a surface buoy, and a mooring line that connects them.

Orcaflex Coordinate Conversion X Vs Y Trial Monitoring Networks

Recent seismic activity in 2013 (possible induced by a gas tank) on the coast of Vinaròs, or the intense underwater seismic activity associated with the eruption of El Hierro in the archipelago of the Canary Islands (2011–2012), shows the importance of controlling seismic events located in the sea that are not covered by the terrestrial monitoring networks.Monitoring the regional seismic events in real time makes it possible to achieve fast estimation of actual earthquake scales, since the measured seismicity directly gives us the true size of the earthquake. A GPS receiver on the surface buoy has been configured to perform accurate timestamps on the seismic data, which makes it possible to integrate the seismic data from these marine seismometers into the existing seismic network.Variations in real-time seismicity provide knowledge of the state of local and regional stresses in the short and medium term, essential information to study the potential seismic risk that may affect infrastructures and population located in the area. The seismometer transmits continuous data at a rate of 1000 bps to a controller equipped with a radio link in the surface buoy. In this paper we also present the first results and an earthquake detection of a prototype system that demonstrates the feasibility of this concept. Additional batteries are needed for the underwater unit. The power to operate the surface buoy is provided by solar panels.

However, the standalone ocean bottom broadband stations, implementing an acoustic link between the OBS and the surface, are limited by the acoustic communication latency, power consumption, and bandwidth.Within this context, we developed and implemented a new technology for standalone ocean bottom broadband systems. More affordable solutions are the OBSs acoustically linked to surface buoys or surface vehicles. Although a permanent array of wired OBSs can be considered as the best technology for seismic surveys, having practically unlimited power and data transmission bandwidth, it is very expensive to implement and its deployment is restricted to the locations where such cable observatories can be deployed.

Orcaflex Coordinate Conversion X Vs Y Registration Of A

Standalone Broadband Ocean Bottom SystemIn this paper we describe a moored OBS system, with continuous telemetry through the mooring line and buoy to the shore station, capable of providing good azimuth observations of regional seismic events. Finally, the conclusions drawn are presented in Section 4.2. The results include the registration of a seismic event located in the Hautes-Pyrénées, of magnitude 3.7, that occurred on 28 October at 19.06 UTC. The actual deployment of the standalone ocean bottom broadband station near the OBSEA observatory and the results are discussed in Section 3. Section 2 focuses on the design philosophy of the standalone ocean bottom broadband system including the seafloor unit, the surface buoy, and the mooring and the inductive communication system it includes the dynamic simulations of the prototype for deployment near the OBSEA observatory at a depth of 20 m and in the Alboran Sea (Western Mediterranean) at a depth of 250–300 m.

The overall latency of the system is low (a few tens of seconds), and is dominated by the time to gather a group of data to telemeter, the time to send the data through the inductive link, and the time to send the data through the GPRS or satellite network. An anchored OBS has been built and tested to acquire regional and distant seismicity in near real time. Hence, the degraded seismic data transfer is assumed, as short-term packet loss may occur in moored OBS system. This requires a bandwidth of 0.5 to 30 Hz with 18 bits of resolution, with a signal to noise ratio above 60 dB, and a communication data loss rate less than 10%. Therefore, the moored OBS system should detect seismic events of low seismicity (1.5 < M < 5), located at depths up to 100 km, and the nominal natural period of 1 second.

Seismic data from the moored OBSs can be integrated into the existing seismic data network thanks to the GPS receiver on the surface buoy, which is configured to timestamp all the data coming from the seafloor seismometer. Next, the controller in the buoy forwards the data to the land station through a GPRS link, if the system is placed offshore (tens of kilometres), or through satellite communications, if the system is placed in a far offshore ocean environment. The seismic system continuously transmits data to a controller in the surface buoy, at a rate of 1000 bps through an inductive link provided by two inductive modems attached to the mooring line as illustrated in Figure 1. The validation of this prototype seismic system was done, comparing the data with the existing OBSEA seismometer. The design consists of a seafloor OBS with a broadband sensor unit and a surface buoy connected to a cable with an intermediate buoy ( Figure 1).

This operation can be done from the land base at any time through the bidirectional communication link provided by the inductive and the RF link.( a) Electronic acquisition system and ( b) block diagram of OBS electronics. A centring of the Güralp 6TC OBS masses is required when the seismometer is first deployed on the seafloor. As illustrated in Figure 3, the bottom case is grooved to evacuate exceeding material like sand, mud, sludge, or other kind of sediments, getting a successful coupling with the seafloor. The broadband seismometer is a Güralp 6TC OBS Gimbal with a sensitivity of 1630 V/m/s for each geophone and with a cut-off of at 0.033 Hz for detecting low frequency Earth movements. When the equipment reaches the seabed, the arm that supports the seismometer is tilted and separates the seismometer from the anchor and next the seismic sensor is positioned on the seabed, next to the anchor with the acquisition and power unit, by only the signal and power cable. On demand, the users can also request the data packet of all three channels for short time periods.The seafloor unit consists of an anchor, a seismometer containing 3 geophones (one in each orthogonal axis), and the associate electronics and the batteries ( Figure 2).

If required by the operators, the system can transmit historic packages of seismic data from all 3 axes at full resolution. In normal mode, sub-samples seismic data acquired from the vertical axis of the seismometer is transmitted every ten seconds to the shore station through the inductive communication using a Sea-Bird UIMM module and the surface link. A channel crosstalk of −147 dB shows a good PCB design and EMI immunity.The acquired measurements are timestamped and organized into fixed length miniSEED files and stored on a microSD card. The resolution of the system is about 21.4 bits due to noise and the random noise is about 1.1 LSBs which corresponds to about 320 nV. The data logger has a dynamic range of all the channels of 129 dB, slightly below the ADC dynamic range at the same sampling rate (130 Hz).

A lithium-ion battery pack is used as the main power supply and is enough for 6 months in service collecting data.The proposed design consists of a seabed unit, an intermediate underwater buoy, and a surface buoy (see Figure 6).