Return-path: X-Andrew-Authenticated-as: 7997;andrew.cmu.edu;Ted Anderson Received: from hogtown.andrew.cmu.edu via trymail for +dist+/afs/andrew.cmu.edu/usr11/tm2b/space/space.dl@andrew.cmu.edu (->+dist+/afs/andrew.cmu.edu/usr11/tm2b/space/space.dl) (->ota+space.digests) ID ; Wed, 27 Mar 91 01:28:46 -0500 (EST) Message-ID: Precedence: junk Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Wed, 27 Mar 91 01:28:40 -0500 (EST) Subject: SPACE Digest V13 #301 SPACE Digest Volume 13 : Issue 301 Today's Topics: Magellan Images UPDATED POTENTIAL GEOMAGNETIC STORM WARNING - 07:30 UT, 13 MARCH Monthly Space Flight Briefing Postponed (Forwarded) US - USSR SCIENTIFIC & TECHNOLOGICAL EXHBIT / SYMPOSIUM Re: Pioneer 11 Update - 03/01/91 Re: space news from Feb 4 AW&ST Hiten Update - 03/13/91 Administrivia: Submissions to the SPACE Digest/sci.space should be mailed to space+@andrew.cmu.edu. Other mail, esp. [un]subscription requests, should be sent to space-request+@andrew.cmu.edu, or, if urgent, to tm2b+@andrew.cmu.edu ---------------------------------------------------------------------- Date: 14 Mar 91 05:33:00 GMT From: agate!linus!philabs!ttidca!quad1!bohica!mcws!p0.f851.n102.z1.fidonet.org!Ron.Baalke@ucbvax.Berkeley.EDU (Ron Baalke) Subject: Magellan Images From: baalke@mars.jpl.nasa.gov (Ron Baalke) Path: wciu!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov!baalke Newsgroups: sci.space Subject: Magellan Images Message-ID: <1991Mar13.213326.1292@jato.jpl.nasa.gov> Date: Wed, 13 Mar 91 21:33:26 GMT =================== MAGELLAN IMAGES March 13, 1991 =================== I've placed two more Magellan images in VICAR format and 11 in GIF format at the Ames SPACE archives, bringing the Magellan total to 14 VICAR images and 28 GIF images. They can be obtained via anonymous ftp from ames.arc.nasa.gov (128.102.18.3), and are in the pub/SPACE/VICAR and pub/SPACE/GIF directories, respectively. The two new VICAR files are called pancakes.img and bahet.img. All of the VICAR images have a corresponding caption files (with a .txt extension) which contains detailed descriptions of the image. Make sure you are in binary mode when transferring the image files, and in ASCII mode when transferring the text files. The two new caption files are appended to the end of this message. The VICAR images can be viewed on an IBM PC computer with the IMDISP program stored in a zip file called imdisp56.zip, located in the pub/SPACE/IMDISP directory. The VICAR format is the format used by the Image Processing Lab (MIPL) at JPL. Most of the VICAR images are in 1024x1024 pixel resolution and are 1MB in size. The pancakes.img image is the image showing the 7 pancake volcanoes. The pan10.img file that I had uploaded earlier shows 3 of the 7 volcanoes. I've converted all of the Magellan VICAR images into GIF format in 640x480 resolution. The new GIF files are: saca1.gif pancakes.gif saca2.gif pancake1.gif saca3.gif bahet.gif saca4.gif bahet1.gif saca5.gif bahet2.gif saca6.gif The saca GIFs were all derived from the original saca.img file which I placed at the Ames site earlier. The original file is quite large at 2.8 MB. This saca.img file had to be reduced by a factor of 4 in order for it to fit in the 640x480 GIF resolution. The six new saca GIF files are closeups of various parts of the saca.img with no detail loss. The pancakes.gif was converted from pancakes.img, with pancake1.gif zooming in on 4 of the volcanoes. Likewise, bahet.gif was converted from bahet.img, with bahet1.gif and bahet2.gif being subsections of bahet.img, showing it in greater detail. ============================================================================ PANCAKES.TXT (same as PAN10.TXT) This image of the eastern edge of Alpha Regio, 30 degrees south latitude, 11.8 east longitude, was acquired on November 7, 1990. It shows seven circular domical hills averaging 25 kilometers (15 miles) in diameter and maximum heights of 750 meters (2475 feet). These features can be interpreted as viscous or thick eruptions of lava coming from a vent on the relatively level ground allowing the lava to flow in an even lateral pattern. The concentric and radial fracture pattern on their surfaces suggests if they are extrusive that a chilled outer layer formed then further intrusion in the interior stretched the surface. The domes may be analogous to volcanic domes on Earth. An alternative interpretation is that the domes are the result of shallow intrusions up-doming the surface layers. If they are intrusive, then magma withdrawal near the end of the eruptions then produced the fractures. The bright margins possibly indicate the presence of rock debris or talus at the slopes of the domes. Fractures on the surrounding plains are both older and younger than the domical hills. Resolution of the Magellan data is about 120 meters (400 feet). ============================================================================ BAHET.TXT This mosaic of Magellan data in the Fortuna region of Venus, centered at 49 degrees north latitude, 2 degrees longitude, shows two coronae. Coronae are large circular or oval structures first identified in Soviet radar images of Venus. The structure on the left, Bahet Corona, is about 230 kilometers (138 miles) long and 150 kilometers (90 miles) across. A portion of Onatah Corona, over 350 kilometers (210 miles) in diameter, can be seen on the right of the mosaic. Both features are surrounded by a ring of ridges and troughs, which in places cut more radially-oriented fractures. The centers of the features also contain radial fractures as well as volcanic domes and flows. Coronae are thought to form due to the upwelling of hot material from deep in the interior of Venus. The two coronae may have formed at the same time over a single upwelling, or may indicate movement of the upwelling or the upper layers of the planet to the west over time. A 'pancake' dome, similar to low-relief domes see in the southern hemisphere, is located just to the southwest of Bahet. Resolution of the Magellan data is about 120 meters (400 feet). ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@mars.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |___ M/S 301-355 | Change is constant. /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | |_____|/ |_|/ |_____|/ | -- : Ron Baalke - via FidoNet node 1:102/851 (818)352-2993 : ARPA/INTERNET: Ron.Baalke@p0.f851.n102.z1.fidonet.org : UUCP: ...!{elroy!bohica,elroy!wciu,cit-vax!wciu}!mcws!851.0!Ron.Baalke : Compu$erve: >internet:Ron.Baalke@p0.f851.n102.z1.fidonet.org ------------------------------ Date: 13 Mar 91 15:45:00 GMT From: usc!elroy.jpl.nasa.gov!swrinde!zaphod.mps.ohio-state.edu!think.com!linus!philabs!ttidca!quad1!bohica!mcws!p0.f851.n102.z1.fidonet.org!CARY.OLER@ucsd.edu (CARY OLER) Subject: UPDATED POTENTIAL GEOMAGNETIC STORM WARNING - 07:30 UT, 13 MARCH From: oler@HG.ULeth.CA (CARY OLER) Path: wciu!elroy.jpl.nasa.gov!sdd.hp.com!news.cs.indiana.edu!att!ucbvax!HG.ULeth.CA!oler Newsgroups: sci.space Subject: UPDATED POTENTIAL GEOMAGNETIC STORM WARNING - 07:30 UT, 13 MARCH Message-ID: <910313004500.20802f23@HG.ULeth.CA> Date: 13 Mar 91 07:45:00 GMT /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ SOLAR TERRESTRIAL BULLETIN 13 March, 1991 Updated Geomagnetic Storm Warning /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ UPDATED GEOMAGNETIC STORM WARNING INFORMATION At approximately 22:00 UT on 12 March, a sudden magnetic impulse was detected at many magnetic observatories. Approximately 2.5 hours later, the geomagnetic field became disrupted. A major positive magnetic excursion was measured over most middle and high latitude observatories accompanied by moderate to strong disruptions on the HF bands. Only a single magnetic perturbation occurred, and has been followed by generally unsettled to active conditions over the middle latitudes. High latitudes have experienced minor storming. Our local magnetometer was down for routine maintenance at the time of the major magnetic excursion, but was brought on-line during the declining phase of the perturbation. The magnetic excursion (at our site) exceeded 300 gammas and occurred over a time span of about 10 to 15 minutes (the declining phase). Other sites have reported larger excursions. The geomagnetic field is not expected to reach storm level thresholds. Generally active conditions can be expected. Northern middle latitudes can expect periods of minor magnetic storming. High latitudes can also expect to experience minor storm level perturbations. Central and southern middle latitudes can expect unsettled to active magnetic conditions over the UT day of 13 March. The major magnetic excursion was a surprise. An increase in activity was expected to follow the magnetic SI, but was not expected to be nearly as energetic as it was over the middle latitudes. Conditions at the present time are relatively stable. Activity has increased somewhat, but is not near storm levels except near the auroral zone where minor storming is in progress. Auroral activity has increased significantly over the past several hours. Northern middle and high latitudes are witnessing moderate to high auroral activity. Some southward migration of the auroral zone has occurred, but no significant southward migration is expected. No low latitude auroral activity will be visible. However, if major flaring continues, auroral activity could appear in the lower latitudes later this week (see the solar flare alerts). The Potential Geomagnetic Storm Warning remains in effect at least until 24:00 UT on 13 March. An update will be posted early on 14 March or may be combined with a major solar flare alert if major flaring continues. ** End of Bulletin ** -- : CARY OLER - via FidoNet node 1:102/851 (818)352-2993 : ARPA/INTERNET: CARY.OLER@p0.f851.n102.z1.fidonet.org : UUCP: ...!{elroy!bohica,elroy!wciu,cit-vax!wciu}!mcws!851.0!CARY.OLER : Compu$erve: >internet:CARY.OLER@p0.f851.n102.z1.fidonet.org ------------------------------ Date: 20 Mar 91 01:13:50 GMT From: agate!bionet!uwm.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov!baalke@ucbvax.Berkeley.EDU (Ron Baalke) Subject: Monthly Space Flight Briefing Postponed (Forwarded) Mark Hess Headquarters, Washington, D.C. March 19, 1991 (Phone: 202/453-4164) 3:30 p.m. EST N91-20 MONTHLY SPACE FLIGHT BRIEFING POSTPONED The Office of Space Flight monthly press briefing scheduled for Wednesday, March 20, at 11:30 a.m. EST has been postponed until Thursday, March 21, at 10:30 a.m. at a location to be announced. Media representatives planning to attend the briefing should contact the NASA Headquarters newsroom ( 202/453-8400) after 3:00 p.m. Wednesday for location information. ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@mars.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |___ M/S 301-355 | Change is constant. /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | |_____|/ |_|/ |_____|/ | ------------------------------ Date: 18 Mar 91 19:11:04 GMT From: haven!ni.umd.edu!MIKE%UC780.UMD.EDU@louie.udel.edu (Mike Santangelo) Subject: US - USSR SCIENTIFIC & TECHNOLOGICAL EXHBIT / SYMPOSIUM My wasn't I surprised when I walked downstairs where I work to discover the aforementioned conference going on. I work for the University of Maryland, University College. Our main building, the Center for Adult Education, is also a conference center for the area (Hotel, meeting rooms, big auditorium, etc). The conference has drawn the top brass at NASA and the USSR space agency, you name it they seem to be here. Also, along the main concourse they have created an impressive exhibit area which includes a mockup/prototype of the Soviet TOPAZ II space reactor power system (6 KW version, sign says it will go up to 10 KW without much modification). The exhibit area seems to be open to the public. Alot of press are here as well. Local UMCP newspaper states the Exhibit is being held March 17th - March 20th, Sumposium March 18-19. The Center of Adult Education is located at the intersection of Adelphi Road and University Blvd (Rt. 193) in College Park, MD. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Michael F. Santangelo + Inet: mike@uc780.umd.edu VMS / UNIX Systems + mike@socrates.umd.edu Academic Computing UMUC + Bnet: MIKE@UC780 (The University of Maryland, + MIKE@UMUC (not visited often) University College) + ------------------------------ Date: 11 Mar 91 23:44:00 GMT From: agate!linus!philabs!ttidca!quad1!bohica!mcws!p0.f851.n102.z1.fidonet.org!S.S.Sturrock@ucbvax.Berkeley.EDU (S.S.Sturrock) Subject: Re: Pioneer 11 Update - 03/01/91 From: sss3@ukc.ac.uk (S.S.Sturrock) Path: wciu!elroy.jpl.nasa.gov!swrinde!cs.utexas.edu!uunet!mcsun!ukc!harrier.ukc.ac.uk!sss3 Newsgroups: sci.space Subject: Re: Pioneer 11 Update - 03/01/91 Message-ID: <7097@harrier.ukc.ac.uk> Date: 11 Mar 91 15:44:38 GMT In article <1851@mpirbn.mpifr-bonn.mpg.de> p515dfi@mpirbn.UUCP (Daniel Fischer) writes: >scan across the solar system and take another >shot of the kind Voyager 1 sent a year ago? ^^^^^^^^^^^^^^^^^^^^^^^^^ Missed that one, anyone know how I might get a look at it, or if not, at least tell me what it showed? Shane Sturrock, Biol Lab. Canterbury, Kent, Great Britain. -- : S.S.Sturrock - via FidoNet node 1:102/851 (818)352-2993 : ARPA/INTERNET: S.S.Sturrock@p0.f851.n102.z1.fidonet.org : UUCP: ...!{elroy!bohica,elroy!wciu,cit-vax!wciu}!mcws!851.0!S.S.Sturrock : Compu$erve: >internet:S.S.Sturrock@p0.f851.n102.z1.fidonet.org ------------------------------ Date: 14 Mar 91 04:29:00 GMT From: agate!linus!philabs!ttidca!quad1!bohica!mcws!p0.f851.n102.z1.fidonet.org!Fraering.Philip@ucbvax.Berkeley.EDU (Fraering Philip) Subject: Re: space news from Feb 4 AW&ST From: dlbres10@pc.usl.edu (Fraering Philip) Path: wciu!elroy.jpl.nasa.gov!usc!wuarchive!rex!rouge!dlbres10 Newsgroups: sci.space Subject: Re: space news from Feb 4 AW&ST Message-ID: Date: 13 Mar 91 20:29:24 GMT In article <1991Mar13.043442.3045@zoo.toronto.edu> henry@zoo.toronto.edu (Henry Spencer) writes: >Martin Marietta and Bechtel are scrambling to get pad 40 at the Cape >rebuilt in time for the Mars Observer launch in Sept 1992. What sort of other work does Bechtel do in the aerospace field? I heard they got a lot of the contracts for rebuilding Kuwait, and they do a lot in construction. Do they mainly do launch complex construction, or what? Phil Fraering dlbres10@pc.usl.edu -- : Fraering Philip - via FidoNet node 1:102/851 (818)352-2993 : ARPA/INTERNET: Fraering.Philip@p0.f851.n102.z1.fidonet.org : UUCP: ...!{elroy!bohica,elroy!wciu,cit-vax!wciu}!mcws!851.0!Fraering.Philip : Compu$erve: >internet:Fraering.Philip@p0.f851.n102.z1.fidonet.org ------------------------------ Date: 14 Mar 91 00:19:00 GMT From: agate!linus!philabs!ttidca!quad1!bohica!mcws!p0.f851.n102.z1.fidonet.org!Ron.Baalke@ucbvax.Berkeley.EDU (Ron Baalke) Subject: Hiten Update - 03/13/91 From: baalke@mars.jpl.nasa.gov (Ron Baalke) Path: wciu!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov!baalke Newsgroups: sci.space Subject: Hiten Update - 03/13/91 Message-ID: <1991Mar13.161944.23797@jato.jpl.nasa.gov> Date: Wed, 13 Mar 91 16:19:44 GMT HITEN STATUS REPORT March 13, 1991 The Deep Space Network's 26 meter Canberra station supported ranging tests with the Hiten spacecraft on March 12. The test was successful with all ranging support objectives being met. However, the 9.6Kbps data line did fail twice during the track, but was restored on both occasions. All data was recovered with a post-pass playback. ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@mars.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |___ M/S 301-355 | Change is constant. /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | |_____|/ |_|/ |_____|/ | -- : Ron Baalke - via FidoNet node 1:102/851 (818)352-2993 : ARPA/INTERNET: Ron.Baalke@p0.f851.n102.z1.fidonet.org : UUCP: ...!{elroy!bohica,elroy!wciu,cit-vax!wciu}!mcws!851.0!Ron.Baalke : Compu$erve: >internet:Ron.Baalke@p0.f851.n102.z1.fidonet.org ------------------------------ End of SPACE Digest V13 #301 *******************