ASPEN
Environmental Monitoring System
Aspen is
a distributed open-architecture system designed to provide
a comprehensive set of environmental monitoring data and
processed information. Aspen uses
the latest developments in sensors, digitizers, communication
and computer networking technologies as well as recent findings
in earth sciences research. It is ideal for monitoring seismic
events from local, regional, national and global networks
and arrays. The
concept of open architecture is central to the Aspen environment
because it will not only support your current requirements
but also can be easily adapted to meet your future needs. By
utilizing commercial, off-the-shelf products from high-volume
manufacturers, Aspen provides the greatest network
reliability, scalability, flexibility, security, and lowest
cost-of-ownership. Aspen Field Station
At
remote sites, the Aspen Field Station consists of the
transducers, Kinemetrics and/or Quanterra data-logger and the
communication interface. The data-logger
converts analog signals from the transducers to digital format
and time stamps the data using the GPS receiver for all channels. The
communication interface transfers continuous and/or on-demand
data to the designated Aspen Data Centers using
standard duplex serial interface or standard TCP/IP Level
4 protocol over radio, telephone or satellite communication
links. Aspen Data Center
The Aspen data center consists of the
Access Server and the Antelope Software Package. The
Access Server merges all incoming and outgoing data streams
and forwards them to the data Local Area Network (LAN)
from which they are distributed to the appropriate workstations
using a TCP/IP socket connection. The Antelope consists of two major sub-systems:
• ARTS, the Antelope Real-Time
System
• ASIS, the Antelope Seismic Information System.
The Antelope Real-Time
System provides full functionality for
seismic network and array operations and control. This
includes real time data acquisition to non-volatile disk
ring-buffer, interactive control of field equipment, system
state of health monitoring, and real time automated data
processing (detection, picking, seismic event association,
seismic event location, archiving). It
also offers interactive and batch processing, information
system functions, automated distribution of raw data and
processed results, batch mode seismic array processing
and a powerful development toolkit for extending and customizing
the system. The Antelope Seismic
Information System uses the relational database (RDBMS)
formalism and the CSS v. 3.0 schema for information organization. The ASIS comes
with all the tools to review the seismic information.
Antelope runs
on the Sun Microsystems’ Solaris operating system
on both SPARC and Intel architectures. In addition to
providing specific functionality for seismic monitoring
systems, Antelope provides
a robust and versatile substratum of generic functions
that can be used to support other non-seismic monitoring
applications.
| Key
Features |
| Open-architecture
modular design concepts throughout |
| Distributed
real-time and on-demand data acquisition
and processing capability |
| Distributed
real-time system monitoring and control capability |
| Comprehensive
automated seismic event information in near
real-time |
| Network
size independent - system scales only with
hardware used |
| Records
real-time data to non-volatile disk ring
buffer |
| Ring
buffer size limited only by maximum file
size |
| Client/server
TCP/IP paradigm |
| Supports
all telemetry with standard duplex serial
interfaces or standard TCP/IP Level 4 protocol
over multiple physical interfaces |
| Unique
on-line and off-line processing tools |
| Offers
tools with Relational Database Management
System (RDBMS) for rapid access to earthquake
information |
| Rich
development toolkit |
| Application |
| Local,
Regional, National and Global Seismic Networks
and Arrays |
|
