The "GDSClient" Collecting Tool for Networked Solid Earth Science Data

H Nagao,S Tsuboi,Y Ishihara,H Yanaka

doi:10.2481/dsj.igy-051

Abstract

The data center of our institute distributes solid earth science data obtained by the Ocean Hemisphere Project (OHP) network through the website of Pacific 21. We have developed Java-based software GDSClient, which enables us to collect not only the data of the OHP network but also those distributed from other data centers by means of the web service technology. It is possible to request the data controlling parameters such as data centers, observatories, a data period, and other auxiliary detailed parameters. It is unnecessary to know differences between data centers with preparing a WSDL (Web Services Description Language) file, in which information of user interface is described in XML format. The latest GDSClients are released from the website of Pacific 21.

Highlights

The Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology (IFREE/JAMSTEC), together with the Earthquake Research Institute of the University of Tokyo, has carried out long-term geophysical observations in the western Pacific Ocean called “the Ocean Hemisphere Project (OHP) network” for more than ten years
We have developed Java-based software “GDSClient”, which enables us to collect the data of the OHP network and those distributed from other data centers by means of the web service technology
The observational data are distributed via the web site of the data center of IFREE/JAMSTEC called “Pacific 21”

Summary

INTRODUCTION

The main purpose of the OHP network is to fill in the spatial gap of geophysical observatories and to obtain more precise models of the structure and the activities of the Earth’s interior (e.g., Kawakatsu et al, 1998). We developed a geophysical data distribution system “NINJA”, which has a function to collect the OHP data and geophysical data distributed from other data centers (Takeuchi et al, 2002) This networked data collection is possible through a single user interface with inputting parameters such as observatories and a data period to retrieve. This function of NINJA requires communications with each data server, and this becomes to be difficult recently from a point of view of the network security.

Development of the “GDSClient”

Detailed Functions of “GDSClient”

FUTURE WORKS AND CONCLUSIONS